| INTUITIVE SURGICAL INC      ITEM 1A RISK FACTORS          RISKS RELATING TO OUR BUSINESS          IF OUR PRODUCTS DO NOT ACHIEVE MARKET ACCEPTANCE, WE WILL NOT BE ABLE TO     GENERATE THE REVENUE NECESSARY TO SUPPORT OUR BUSINESS          The  da  Vinci  Surgical  System  and  our  other products represent a     fundamentally new way of performing surgery | 
    
    
      | Achieving physician, patient     and third-party payor acceptance of da Vinci surgery as a preferred method     of performing surgery will be crucial to our success | 
    
    
      | If our products fail     to achieve market acceptance, hospitals will not purchase our products and     we  will  not be able to generate the revenue necessary to support our     business | 
    
    
      | We believe that physicians’ and third-party payors’ acceptance of     the benefits of procedures performed using our products will be essential     for acceptance of our products by patients | 
    
    
      | Physicians will not recommend     the use of our products unless we can demonstrate that they produce results     comparable or superior to existing surgical techniques | 
    
    
      | Even if we can prove     the effectiveness of our products through clinical trials, surgeons may     elect not to use our products for any number of other reasons | 
    
    
      | For example,     cardiologists may continue to recommend conventional heart surgery simply     because such surgery is already widely accepted | 
    
    
      | In addition, surgeons may     be slow to adopt our products because of the perceived liability risks     arising from the use of new products and the uncertainty of reimbursement     from third-party payors | 
    
    
      | We expect that there will be a learning process involved for surgical teams     to become proficient in the use of our products | 
    
    
      | Broad use of our products     will require training of surgical teams | 
    
    
      | Market acceptance could be delayed     by  the time required to complete this training | 
    
    
      | We may not be able to     rapidly train surgical teams in numbers sufficient to generate adequate     demand for our products | 
    
    
      | BECAUSE OUR MARKETS ARE HIGHLY COMPETITIVE, CUSTOMERS MAY CHOOSE TO PURCHASE     OUR COMPETITORS’ PRODUCTS OR MAY NOT ACCEPT DA VINCI SURGERY, WHICH WOULD     RESULT IN REDUCED REVENUE AND LOSS OF MARKET SHARE          Da Vinci surgery is a new technology that will compete with established and     emerging treatment options in both disease management and reconstructive     medical procedures | 
    
    
      | These competitive treatment options may take the form of     traditional  minimally  invasive surgery, open surgery, interventional     approaches, or pharmacological regimens | 
    
    
      | Some of these procedures are widely     accepted in the medical community and in many cases have a long history of     use | 
    
    
      | Technological advances could make such treatments more effective or     less expensive than using our products, which could render our products     obsolete or unmarketable | 
    
    
      | We cannot be certain that physicians will use our     products  to  replace or supplement established treatments or that our     products will be competitive with current or future technologies | 
    
    
      | In addition, we may face competition from companies that develop wristed,     robotic or computer-assisted surgical systems and products in the future | 
    
    
      | Our revenues may be reduced or eliminated if our competitors develop and     market products that are more effective or less expensive than our products | 
    
    
      | If we are unable to compete successfully, our revenues will suffer | 
    
    
      | We may     not be able to maintain or improve our competitive position against current     or potential competitors, especially those with greater resources | 
    
    
      | WE EXPERIENCE LONG AND VARIABLE SALES CYCLES, WHICH COULD HAVE A NEGATIVE     IMPACT ON OUR RESULTS OF OPERATIONS FOR ANY GIVEN QUARTER          Our da Vinci Surgical System has a lengthy sales and purchase order cycle     because it is a major capital item and generally requires the approval of     senior management at purchasing institutions | 
    
    
      | These factors may contribute     to substantial fluctuations in our quarterly operating results | 
    
    
      | Because of     these fluctuations, it is likely that in some future quarters our operating     results  will  fall  below  the expectations of securities analysts or     investors | 
    
    
      | If that happens, the market price of our stock would likely     decrease | 
    
    
      | These fluctuations also mean that you will not be able to rely     upon our operating results in any particular period as an indication of     future performance | 
    
    
      | In addition, the introduction of new products could     adversely impact our sales cycle, as customers take additional time to     assess the benefits and costs of such products | 
    
    
      | 20     ______________________________________________________________________    [46]Table of Contents       INTERNATIONAL SALES OF OUR PRODUCTS ACCOUNT FOR A SIGNIFICANT PORTION OF OUR     REVENUES, WHICH EXPOSES US TO RISKS INHERENT IN INTERNATIONAL OPERATIONS     OUR  GROWTH MAY BE LIMITED IF WE ARE UNABLE TO SUCCESSFULLY MANAGE OUR     INTERNATIONAL ACTIVITIES          Our business currently depends in part on our activities in Europe and other     foreign markets | 
    
    
      | Sales to markets outside of the United States accounted for     approximately  17prca, 21prca, and 24prca of our sales for 2005, 2004 and 2003,     respectively | 
    
    
      | We are subject to a number of challenges that specifically     relate to our international business activities | 
    
    
      | These challenges include:           •   failure of local laws to provide the same degree of protection against     infringement of our intellectual property;           •   protectionist laws and business practices that favor local     competitors, which could slow our growth in international markets;           •   the risks associated with foreign currency exchange rate fluctuation;           •   the expense of establishing facilities and operations in new foreign     markets; and           •   building an organization capable of supporting geographically     dispersed operations | 
    
    
      | Currently, more than half of our international sales are denominated in     United States dollars | 
    
    
      | As a result, an increase in the value of the United     States dollar relative to foreign currencies could make our products less     competitive in international markets | 
    
    
      | If we are unable to meet and overcome     these challenges, our international operations may not be successful, which     would limit the growth of our business | 
    
    
      | IF  DEFECTS  ARE  DISCOVERED  IN OUR PRODUCTS, WE MAY INCUR ADDITIONAL     UNFORESEEN COSTS, HOSPITALS MAY NOT PURCHASE OUR PRODUCTS AND OUR REPUTATION     MAY SUFFER          Our products incorporate mechanical parts, electrical components, optical     components  and  computer software, any of which can contain errors or     failures, especially when first introduced | 
    
    
      | In addition, new products or     enhancements may contain undetected errors or performance problems that,     despite testing, are discovered only after commercial shipment | 
    
    
      | Because our     products are designed to be used to perform complex surgical procedures, we     expect  that  our customers will have an increased sensitivity to such     defects | 
    
    
      | In the past, we have voluntarily recalled certain products as a     result of performance problems | 
    
    
      | We cannot assure you that our products will     not  experience  errors  or  performance problems in the future | 
    
    
      | If we     experience flaws or performance problems, any of the following could occur:           •   delays in product shipments;           •   loss of revenue;           •   delay in market acceptance;           •   diversion of our resources;           •   damage to our reputation;           •   product recalls;           •   increased service or warranty costs; or           •   product liability claims | 
    
    
      | THE USE OF OUR PRODUCTS COULD RESULT IN PRODUCT LIABILITY CLAIMS THAT COULD     BE EXPENSIVE, DIVERT MANAGEMENT’S ATTENTION AND HARM OUR BUSINESS          Our business exposes us to significant risks of product liability claims | 
    
    
      | The medical device industry has historically been litigious, and we face     financial exposure to product liability claims if the use of our products                                           21     ______________________________________________________________________    [47]Table of Contents       were to cause injury or death | 
    
    
      | There is also the possibility that defects in     the  design or manufacture of our products might necessitate a product     recall | 
    
    
      | Any weaknesses in training and services associated with our products     may also be subject to product liability lawsuits | 
    
    
      | Although we maintain     product liability insurance, the coverage limits of these policies may not     be adequate to cover future claims | 
    
    
      | Particularly as sales of our products     increase, we may be unable to maintain product liability insurance in the     future at satisfactory rates or in adequate amounts | 
    
    
      | A product liability     claim,  regardless  of  its merit or eventual outcome, could result in     significant legal defense costs | 
    
    
      | Product liability claims have been made     against our company in the past | 
    
    
      | A product liability claim or any product     recalls could also harm our reputation or result in a decline in revenues | 
    
    
      | WE MAY ENCOUNTER MANUFACTURING PROBLEMS OR DELAYS THAT COULD RESULT IN LOST     REVENUE          Manufacturing  our  products  is  a  complex process | 
    
    
      | We may encounter     difficulties in scaling up production of our products, including:           •   problems involving production yields;           •   quality control and assurance;           •   component supply shortages;           •   shortages of qualified personnel; and           •   compliance with state, federal and foreign regulations | 
    
    
      | If demand for our products exceeds our manufacturing capacity, we could     develop  a substantial backlog of customer orders | 
    
    
      | If we are unable to     maintain larger-scale manufacturing capabilities, our ability to generate     revenues will be limited and our reputation in the marketplace could be     damaged | 
    
    
      | OUR RELIANCE ON SOLE AND SINGLE SOURCE SUPPLIERS COULD HARM OUR ABILITY TO     MEET DEMAND FOR OUR PRODUCTS IN A TIMELY MANNER OR WITHIN BUDGET          Some  of the components necessary for the assembly of our products are     currently  provided  to us by sole-sourced suppliers or single-sourced     suppliers | 
    
    
      | We purchase components through purchase orders rather than     long-term supply agreements and generally do not maintain large volumes of     inventory | 
    
    
      | The disruption or termination of the supply of components could     cause a significant increase in the costs of these components, which could     affect our profitability | 
    
    
      | A disruption or termination in the supply of     components  could  also result in our inability to meet demand for our     products,  which  could harm our ability to generate revenues, lead to     customer dissatisfaction and damage our reputation | 
    
    
      | Furthermore, if we are     required to change the manufacturer of a key component of our products, we     may be required to verify that the new manufacturer maintains facilities and     procedures  that comply with quality standards and with all applicable     regulations and guidelines | 
    
    
      | The delays associated with the verification of a     new manufacturer could delay our ability to manufacture our products in a     timely manner or within budget | 
    
    
      | IF  INSTITUTIONS  OR  SURGEONS ARE UNABLE TO OBTAIN REIMBURSEMENT FROM     THIRD-PARTY PAYORS FOR PROCEDURES USING OUR PRODUCTS, OR IF REIMBURSEMENT IS     INSUFFICIENT TO COVER THE COSTS OF PURCHASING OUR PRODUCTS, WE MAY BE UNABLE     TO GENERATE SUFFICIENT SALES TO SUPPORT OUR BUSINESS          Domestic institutions will typically bill the services performed with our     products to various third-party payors, such as Medicare, Medicaid and other     government programs and private insurance plans | 
    
    
      | If hospitals do not obtain     sufficient reimbursement from third-party payors for procedures performed     with our products, or if government and private payors’ policies do not     permit reimbursement for surgical procedures performed using our products,     we  may  not be able to generate the revenues necessary to support our     business | 
    
    
      | Our  success in international markets also depends upon the     eligibility of our products for reimbursement through government- sponsored     health care payment                                           22     ______________________________________________________________________    [48]Table of Contents       systems and third-party payors | 
    
    
      | Reimbursement practices vary significantly     by country | 
    
    
      | Many international markets have government-managed healthcare     systems that control reimbursement for new products and procedures | 
    
    
      | Other     foreign markets have both private insurance systems and government-managed     systems that control reimbursement for new products and procedures | 
    
    
      | Market     acceptance of our products may depend on the availability and level of     reimbursement in any country within a particular time | 
    
    
      | In addition, health     care cost containment efforts similar to those we face in the United States     are prevalent in many of the other countries in which we intend to sell our     products and these efforts are expected to continue | 
    
    
      | IF WE LOSE OUR KEY PERSONNEL OR ARE UNABLE TO ATTRACT AND RETAIN ADDITIONAL     PERSONNEL, OUR ABILITY TO COMPETE WILL BE HARMED          We are highly dependent on the principal members of our management and     scientific staff | 
    
    
      | Our product development plans depend, in part, on our     ability  to attract and retain engineers with experience in mechanics,     software and optics | 
    
    
      | Attracting and retaining qualified personnel will be     critical to our success, and competition for qualified personnel is intense | 
    
    
      | We may not be able to attract and retain personnel on acceptable terms given     the competition for such personnel among technology and healthcare companies     and universities | 
    
    
      | The loss of any of these persons or our inability to     attract and retain qualified personnel could harm our business and our     ability to compete | 
    
    
      | RECENT CHANGES IN THE REQUIRED ACCOUNTING TREATMENT FOR STOCK OPTIONS WILL     HAVE A MATERIAL ADVERSE IMPACT ON OUR NET INCOME AND NET INCOME PER SHARE     AND MAY ADVERSELY AFFECT OUR STOCK PRICE          In December 2004, the Financial Accounting Standards Board issued SFAS     Nodtta 123 (revised 2004) “Share Based Payment,” or SFAS 123R, pursuant to     which we must measure all stock-based compensation awards, including grants     of employee stock options, using a fair value-based method and record such     expense  in our consolidated financial statements | 
    
    
      | This requirement to     expense stock-based compensation awards is effective for public companies     for annual periods beginning after June 15, 2005 | 
    
    
      | Accordingly, SFAS 123R     will be effective for us starting January 1, 2006 | 
    
    
      | Our net income and our     earnings per share will be significantly reduced or may reflect a loss | 
    
    
      | We     currently calculate stock-based compensation expense using the Black-Scholes     option-pricing model and disclose the pro forma impact on net income (loss)     and net income (loss) per share in our consolidated financial statements | 
    
    
      | A     fair  value based model such as the Black-Scholes option-pricing model     requires the input of highly subjective assumptions and does not necessarily     provide  a reliable single measure of the fair value of stock options | 
    
    
      | Assumptions used under the Black-Scholes option-pricing model that are     highly subjective include the expected stock price volatility and expected     life of an option | 
    
    
      | The actual impact on our results of operations upon     adoption of the new standard could be significantly different from the pro     forma  information  included  in  Note 2 to our consolidated financial     statements  due to variations in estimates and assumptions used in the     calculation | 
    
    
      | These assumptions will require management to predict the future     stock performance and employees’ stock option exercise behavior, which are     beyond management’s control | 
    
    
      | Management will apply our best judgement in     making the assumptions | 
    
    
      | However, the actual stock based compensation expense     upon adoption of the new standard could be significantly different from the     pro forma information | 
    
    
      | RISKS RELATING TO OUR REGULATORY ENVIRONMENT          OUR PRODUCTS ARE SUBJECT TO A LENGTHY AND UNCERTAIN DOMESTIC REGULATORY     PROCESS IF WE DO NOT OBTAIN AND MAINTAIN THE NECESSARY DOMESTIC REGULATORY     APPROVALS, WE WILL NOT BE ABLE TO MARKET AND SELL OUR PRODUCTS IN THE UNITED     STATES          Our products and operations are subject to extensive regulation in the     United States by the US Food and Drug Administration, or FDA The FDA     regulates the research, testing, manufacturing, safety, labeling, storage,     record keeping, promotion, distribution and production of medical devices in     the United States to ensure that                                           23     ______________________________________________________________________    [49]Table of Contents       medical products distributed domestically are safe and effective for their     intended uses | 
    
    
      | In order for us to market certain products for use in the     United  States,  we generally must first obtain clearance from the FDA     pursuant to Section 510(k) of the Federal Food, Drug, and Cosmetic Act, or     FFDCA Clearance under Section 510(k) requires demonstration that a new     device is substantially equivalent to another device with 510(k) clearance     or grandfather status | 
    
    
      | If we significantly modify our products after they     receive FDA clearance, the FDA may require us to submit a separate 510(k) or     premarket approval application, or PMA, for the modified product before we     are permitted to market the products in the US In addition, if we develop     products  in  the  future  that are not considered to be substantially     equivalent to a device with 510(k) clearance or grandfather status, we will     be required to obtain FDA approval by submitting a PMA         The FDA may not act favorably or quickly in its review of our 510(k) or PMA     submissions, or we may encounter significant difficulties and costs in our     efforts to obtain FDA clearance or approval, all of which could delay or     preclude sale of new products in the United States | 
    
    
      | Furthermore, the FDA may     request additional data or require us to conduct further testing, or compile     more data, including clinical data and clinical studies, in support of a     510(k)  submission | 
    
    
      | The  FDA  may also, instead of accepting a 510(k)     submission, require us to submit a PMA, which is typically a much more     complex and burdensome application than a 510(k) | 
    
    
      | To support a PMA, the FDA     would  likely  require that we conduct one or more clinical studies to     demonstrate that the device is safe and effective | 
    
    
      | We may not be able to     meet the requirements to obtain 510(k) clearance or PMA approval, or the FDA     may not grant any necessary clearances or approvals | 
    
    
      | In addition, the FDA     may place significant limitations upon the intended use of our products as a     condition to a 510(k) clearance or PMA approval | 
    
    
      | Product applications can     also  be  denied or withdrawn due to failure to comply with regulatory     requirements or the occurrence of unforeseen problems following clearance or     approval | 
    
    
      | Any delays or failure to obtain FDA clearance or approvals of new     products we develop, any limitations imposed by the FDA on new product use,     or the costs of obtaining FDA clearance or approvals could have a material     adverse  effect  on  our  business, financial condition and results of     operations | 
    
    
      | In order to conduct a clinical investigation involving human subjects for     the purpose of demonstrating the safety and effectiveness of a device, a     company must, among other things, apply for and obtain Institutional Review     Board, or IRB, approval of the proposed investigation | 
    
    
      | In addition, if the     clinical study involves a “significant risk” (as defined by the FDA) to     human health, the sponsor of the investigation must also submit and obtain     FDA approval of an investigational device exemption, or IDE, application | 
    
    
      | Most of our products to date have been considered significant risk devices     requiring IDE approval prior to investigational use | 
    
    
      | We may not be able to     obtain FDA and/or IRB approval to undertake clinical trials in the US for     any new devices we intend to market in the United States in the future | 
    
    
      | If     we obtain such approvals, we may not be able to comply with the IDE and     other regulations governing clinical investigations or the data from any     such trials may not support clearance or approval of the investigational     device | 
    
    
      | Failure to obtain such approvals or to comply with such regulations     could have a material adverse effect on our business, financial condition     and results of operations | 
    
    
      | COMPLYING WITH FDA REGULATIONS IS AN EXPENSIVE AND TIME-CONSUMING PROCESS,     AND OUR FAILURE TO COMPLY FULLY COULD SUBJECT US TO SIGNIFICANT ENFORCEMENT     ACTIONS          Because  our  products,  including  the  da Vinci Surgical System, are     commercially distributed, numerous postmarket regulatory requirements apply,     including the following:           •   Quality System Regulation, or QSR, which requires manufacturers to     follow elaborate design, testing, control, documentation and other quality     assurance procedures during the manufacturing process;           •   labeling regulations;           •   the FDA’s general prohibition against false or misleading statements     in the labeling or promotion of products for unapproved or “off-label” uses;                                           24     ______________________________________________________________________    [50]Table of Contents         •   the Reports of Corrections and Removals regulation, which requires     that manufacturers report to the FDA recalls and field corrective actions     taken to reduce a risk to health or to remedy a violation of the FFDCA that     may pose a risk to health; and           •   the Medical Device Reporting regulation, which requires that     manufacturers report to the FDA if their device may have caused or     contributed to a death or serious injury or malfunctioned in a way that     would likely cause or contribute to a death or serious injury if it were to     recur | 
    
    
      | We  are subject to inspection and marketing surveillance by the FDA to     determine our compliance with regulatory requirements | 
    
    
      | If the FDA finds that     we have failed to comply, it can institute a wide variety of enforcement     actions, ranging from a regulatory letter to a public warning letter to more     severe civil and criminal sanctions | 
    
    
      | Our failure to comply with applicable     requirements could lead to an enforcement action that may have an adverse     effect on our financial condition and results of operations | 
    
    
      | We have modified the labeling; advertising and user training for the da     Vinci Surgical System to call out specific procedures that we believe are     within the scope of our existing 510(k) clearances | 
    
    
      | We cannot assure you     that the FDA would agree that all such specific procedures are within the     scope of the existing general clearance or that we have compiled adequate     information  to  support the safety and efficacy of using the da Vinci     Surgical System for all such specific procedures | 
    
    
      | We also have modified the     hardware and software in the da Vinci Surgical System since clearance in     ways that we believe do not require new 510(k) clearance | 
    
    
      | We cannot assure     you that the FDA would agree with our determinations not to seek new 510(k)     clearance  for any of these changes | 
    
    
      | Computer Motion also modified the     hardware and software in its products subsequent to 510(k) clearance without     seeking new clearance | 
    
    
      | We cannot assure you that the FDA would agree with     the  determinations  not to seek new 510(k) clearance for any of these     changes | 
    
    
      | The FDA could impose enforcement sanctions and/or require us to     obtain 510(k) clearance for any modification to our products or Computer     Motion’s products | 
    
    
      | We may be prohibited from marketing the modified device     until such 510(k) clearance is granted | 
    
    
      | In December 2002, the FDA inspected our Sunnyvale manufacturing facility and     issued a Form FDA 483 setting forth three observed compliance deficiencies     relating to the QSR and two observed deficiencies relating to the Reports of     Corrections and Removals regulation | 
    
    
      | In January 2003, we wrote to the FDA     indicating  our  response to each observation with proposed corrective     actions | 
    
    
      | That same month, the FDA informed us that the adequacy of our     promised  corrections  and  actions  would be verified during the next     inspection of our facility | 
    
    
      | We     cannot  assure you that, upon reinspection, the FDA will find that our     promised  corrective  actions  are  appropriate or that they have been     adequately implemented | 
    
    
      | We also cannot assure you that the FDA will not find     other deficiencies in our compliance with the QSR and other postmarket     regulations | 
    
    
      | In  June 2003, we acquired Computer Motion and have integrated its FDA     compliance quality system into our own | 
    
    
      | As a result of the integration and     review, we identified that Computer Motion has had deficiencies in complaint     handling, MDR reporting and Corrections and Removals reporting in the last     several years that required submission of retroactive reports to the FDA We     reported 52 MDRs and we believe that our reporting decisions regarding these     52 complaints is conservative in part because many of the complaints likely     would not have been reportable if more information had been available | 
    
    
      | Also,     to our knowledge, none of the reported events resulted in a death or serious     injury, prolonged hospitalization, or medical intervention to prevent death     or serious injury | 
    
    
      | Computer Motion did respond to complaint trends, and it     addressed the trends through corrective actions | 
    
    
      | Accordingly, the incidence     of many of the types of events in the reports had been mitigated by June     2003 | 
    
    
      | Our review also suggests that significant complaint trends identified     by  Computer  Motion  over  the period of four years were addressed by     corrective actions, which have proven to be effective over time | 
    
    
      | Computer     Motion’s product modifications were completed without 510(k) clearance and     we believe that they do not require new 510(k) clearance | 
    
    
      | We cannot assure     you that the FDA would agree with our determinations not to seek new 510(k)     clearance for any of these changes | 
    
    
      | 25     ______________________________________________________________________    [51]Table of Contents       We  cannot assure you that the FDA will not seek to impose enforcement     actions on us for Computer Motion violations preceding our acquisition of     Computer Motion, that the FDA will agree that since the acquisition we have     corrected all regulatory problems, or that our review of Computer Motion’s     complaint handling will not lead us to initiate recalls or field actions to     remedy problems with Computer Motion products already in the field | 
    
    
      | OUR PRODUCTS ARE SUBJECT TO VARIOUS INTERNATIONAL REGULATORY PROCESSES AND     APPROVAL  REQUIREMENTS IF WE DO NOT OBTAIN AND MAINTAIN THE NECESSARY     INTERNATIONAL REGULATORY APPROVALS, WE WILL NOT BE ABLE TO MARKET AND SELL     OUR PRODUCTS IN FOREIGN COUNTRIES          To be able to market and sell our products in other countries, we must     obtain  regulatory  approvals and comply with the regulations of those     countries | 
    
    
      | These regulations, including the requirements for approvals and     the time required for regulatory review, vary from country to country | 
    
    
      | Obtaining and maintaining foreign regulatory approvals are expensive, and we     cannot be certain that we will receive regulatory approvals in any foreign     country  in which we plan to market our products | 
    
    
      | If we fail to obtain     regulatory approval in any foreign country in which we plan to market our     products, our ability to generate revenue will be harmed | 
    
    
      | The European Union requires that manufacturers of medical products obtain     the right to affix the CE mark to their products before selling them in     member countries of the European Union | 
    
    
      | The CE mark is an international     symbol of adherence to quality assurance standards and compliance with     applicable European medical device directives | 
    
    
      | In order to obtain the right     to affix the CE mark to products, a manufacturer must obtain certification     that its processes meet certain European quality standards | 
    
    
      | In January 1999,     we received permission to affix the CE mark to our da Vinci Surgical System     and EndoWrist instruments | 
    
    
      | As  we modify existing products or develop new products in the future,     including new instruments, we apply for permission to affix the CE mark to     such products | 
    
    
      | In addition, we will be subject to annual regulatory audits     in order to maintain the CE mark permissions we have already obtained | 
    
    
      | We do     not know whether we will be able to obtain permission to affix the CE mark     for new or modified products or that we will continue to meet the quality     and safety standards required to maintain the permissions we have already     received | 
    
    
      | If we are unable to maintain permission to affix the CE mark to     our products, we will no longer be able to sell our products in member     countries of the European Union | 
    
    
      | IF OUR MANUFACTURING FACILITIES DO NOT CONTINUE TO MEET FEDERAL, STATE OR     EUROPEAN MANUFACTURING STANDARDS, WE MAY BE REQUIRED TO TEMPORARILY CEASE     ALL OR PART OF OUR MANUFACTURING OPERATIONS, WHICH WOULD RESULT IN PRODUCT     DELIVERY DELAYS AND LOST REVENUE          Our  manufacturing  facilities  are  subject to periodic inspection by     regulatory authorities and our operations will continue to be regulated by     the  FDA  for compliance with Good Manufacturing Practice requirements     contained in the FDA’s Quality System Regulations, or QSR We are also     required to comply with International Organization for Standardization, or     ISO, quality system standards in order to produce products for sale in     Europe | 
    
    
      | If we fail to continue to comply with Good Manufacturing Practice     requirements or ISO standards, we may be required to cease all or part of     our operations until we comply with these regulations | 
    
    
      | We are currently in     compliance with ISO standards | 
    
    
      | The FDA inspected our Mountain View and     Sunnyvale facilities in March 2000 and December 2002, respectively | 
    
    
      | The Good     Manufacturing Practice issues raised by the FDA during the inspections     either were satisfactorily resolved with the FDA, or we believe can be     resolved by us to the FDA’s satisfaction, although we cannot assure you that     we will be able to do so | 
    
    
      | We continue to be subject to FDA inspections at     any time | 
    
    
      | Maintaining such compliance is difficult and costly | 
    
    
      | We cannot be     certain that our facilities will be found to comply with Good Manufacturing     Practice requirements or ISO standards in future inspections and audits by     regulatory authorities | 
    
    
      | 26     ______________________________________________________________________    [52]Table of Contents       As required, we are licensed by the State of California to manufacture     medical devices | 
    
    
      | We are subject to periodic inspections by the California     Department of Health Services and, if we are unable to maintain this license     following any future inspections, we will be unable to manufacture or ship     any products | 
    
    
      | RISKS RELATING TO OUR INTELLECTUAL PROPERTY          IF WE ARE UNABLE TO PROTECT THE INTELLECTUAL PROPERTY CONTAINED IN OUR     PRODUCTS FROM USE BY THIRD PARTIES, OUR ABILITY TO COMPETE IN THE MARKET     WILL BE HARMED          Our commercial success will depend in part on obtaining patent and other     intellectual property protection for the technologies contained in our     products, and on successfully defending our patents and other intellectual     property against third party challenges | 
    
    
      | We will incur substantial costs in     obtaining patents and, if necessary, defending our proprietary rights | 
    
    
      | The     patent positions of medical device companies, including ours, can be highly     uncertain and involve complex and evolving legal and factual questions | 
    
    
      | We     do not know whether we will obtain the patent protection we seek, or that     the  protection  we  do  obtain will be found valid and enforceable if     challenged | 
    
    
      | We  also  do  not know whether we will be able to develop     additional  patentable  proprietary technologies | 
    
    
      | If we fail to obtain     adequate protection of our intellectual property, or if any protection we     obtain is reduced or eliminated, others could use our intellectual property     without compensating us, resulting in harm to our business | 
    
    
      | We may also     determine that it is in our best interests to voluntarily challenge a third     party’s products or patents in litigation or administrative proceedings,     including patent interferences or reexaminations | 
    
    
      | Furthermore, the laws of     certain foreign countries do not protect intellectual property rights to the     same extent, as do the laws of the United States | 
    
    
      | In addition to patents, we typically rely on a combination of trade secret,     copyright and trademark laws, nondisclosure agreements and other contractual     provisions and technical security measures to protect our intellectual     property  rights | 
    
    
      | Nevertheless, these measures may not be adequate to     safeguard the technology underlying our products | 
    
    
      | If they do not protect our     rights adequately, third parties could use our technology, and our ability     to  compete  in  the  market would be reduced | 
    
    
      | In addition, employees,     consultants and others who participate in developing our products may breach     their agreements with us regarding our intellectual property, and we may not     have  adequate  remedies  for  the  breach | 
    
    
      | We also may not be able to     effectively  protect  our intellectual property rights in some foreign     countries | 
    
    
      | For a variety of reasons, we may decide not to file for patent,     copyright or trademark protection outside the United States | 
    
    
      | We also realize     that our trade secrets may become known through other means not currently     foreseen by us | 
    
    
      | Notwithstanding our efforts to protect our intellectual     property, our competitors may independently develop similar or alternative     technologies or products that are equal or superior to our technology and     products without infringing any of our intellectual property rights, or may     design around our proprietary technologies | 
    
    
      | OTHERS MAY ASSERT THAT OUR PRODUCTS INFRINGE THEIR INTELLECTUAL PROPERTY     RIGHTS, WHICH MAY CAUSE US TO ENGAGE IN COSTLY DISPUTES AND, IF WE ARE NOT     SUCCESSFUL IN DEFENDING OURSELVES, COULD ALSO CAUSE US TO PAY SUBSTANTIAL     DAMAGES AND PROHIBIT US FROM SELLING OUR PRODUCTS          There may be United States and foreign patents issued to third parties that     relate to computer-assisted surgery, remote surgery, and minimally invasive     surgery | 
    
    
      | Some of these patents may be broad enough to cover one or more     aspects of our present technology, and may cover aspects of our future     technology | 
    
    
      | We do not know whether any of these patents, if challenged,     would  be held valid, enforceable and infringed | 
    
    
      | From time to time, we     receive, and likely will continue to receive, letters from third parties     inviting us to license their patents | 
    
    
      | We may be sued by, or become involved     in an administrative proceeding with, one or more of these third parties | 
    
    
      | We     cannot assure you that a court or administrative body would agree with any     arguments or defenses we may have concerning invalidity, unenforceability or     noninfringement of any third-party patent | 
    
    
      | In addition to the issued patents     of which we are aware, other parties may have filed, and in the future are     likely to file, patent                                           27     ______________________________________________________________________    [53]Table of Contents       applications covering surgical products that are similar or identical to     ours | 
    
    
      | We cannot assure you that any patents issuing from applications filed     by a third party will not cover our products or will not have priority over     our patent applications | 
    
    
      | The medical device industry has been characterized by extensive litigation     and administrative proceedings regarding patents and other intellectual     property  rights,  and  companies have employed such actions to gain a     competitive  advantage | 
    
    
      | If third parties assert infringement or other     intellectual  property claims against us, our technical and management     personnel will experience a significant diversion of time and effort and we     will incur large expenses defending our company | 
    
    
      | If third parties in any     patent action are successful, our patent portfolio may be damaged, we may     have to pay substantial damages, including treble damages, and we may be     required  to  stop  selling our products or obtain a license which, if     available at all, may require us to pay substantial royalties | 
    
    
      | We cannot be     certain  that  we will have the financial resources or the substantive     arguments to defend our patents from infringement or claims of invalidity or     unenforceability,  or to defend against allegations of infringement of     third-party  patents | 
    
    
      | In addition, any public announcements related to     litigation or administrative proceedings initiated by us, or initiated or     threatened against us, could cause our stock price to decline | 
    
    
      | OUR PRODUCTS RELY ON LICENSES FROM THIRD PARTIES, AND IF WE LOSE ACCESS TO     THESE TECHNOLOGIES, OUR REVENUES COULD DECLINE          We rely on technology that we license from others, including technology that     is integral to our products | 
    
    
      | We have entered into license agreements with     Brookhill-Wilk, LLC , Hansen Medical, Inc, Heartport, Inc, now part of     Johnson & Johnson, IBM Corporation, Medtronic, Inc, MIT, Olympus Optical     Co, Ltd | 
    
    
      | and SRI International | 
    
    
      | Any of these agreements may be terminated     for breach | 
    
    
      | If any of these agreements is terminated, we may be unable to     reacquire the necessary license on satisfactory terms, or at all | 
    
    
      | The loss     or  failure  to maintain these licenses could prevent or delay further     development or commercialization of our products | 
    
    
      | RISKS RELATING TO OUR TRADING MARKETS          OUR  FUTURE  OPERATING  RESULTS  MAY  BE BELOW SECURITIES ANALYSTS’ OR     INVESTORS’ EXPECTATIONS, WHICH COULD CAUSE OUR STOCK PRICE TO DECLINE          Due to the nascent nature of our industry, we have limited insight into     trends that may emerge in our market and affect our business | 
    
    
      | The revenue     and income potential of our market are unproven, and we may be unable to     continue to generate significant revenues | 
    
    
      | In addition, our costs may be     higher than we anticipated | 
    
    
      | If we fail to generate sufficient revenues or     our costs are higher than we expect, our results of operations will suffer | 
    
    
      | Further, future revenue from sales of our products is difficult to forecast     because the market for new surgical technologies is still evolving | 
    
    
      | Our     results of operations will depend upon numerous factors, including:           •   the extent to which our products gain market acceptance;           •   actions relating to regulatory matters;           •   our timing and ability to develop our manufacturing and sales and     marketing capabilities;           •   demand for our products;           •   the size and timing of particular sales and any collection delays     related to those sales;           •   product quality and supply problems;           •   the progress of surgical training in the use of our products;           •   our ability to develop, introduce and market new or enhanced versions     of our products on a timely basis;           •   third-party payor reimbursement policies;           •   our ability to protect our proprietary rights and defend against third     party challenges;                                           28     ______________________________________________________________________    [54]Table of Contents         •   our ability to license additional intellectual property rights; and           •   the progress and results of clinical trials | 
    
    
      | Our  operating results in any particular period will not be a reliable     indication of our future performance | 
    
    
      | It is likely that in some future     quarters, our operating results will be below the expectations of securities     analysts or investors | 
    
    
      | If this occurs, the price of our common stock, and     the value of your investment, will likely decline | 
    
    
      | OUR STOCK PRICE HAS BEEN, AND WILL LIKELY CONTINUE TO BE, VOLATILE          The market price of our common stock has experienced fluctuations and is     likely  to  fluctuate significantly in the future | 
    
    
      | Our stock price can     fluctuate for a number of reasons, including:           •   announcements about us or our competitors;           •   quarterly variations in operating results;           •   introduction or abandonment of new technologies or products;           •   changes in product pricing policies;           •   changes in earnings estimates by analysts or changes in accounting     policies, including expensing stock options in accordance with Statement of     Financial Accounting Standard (SFAS) Nodtta 123R, “Shared-Based Payment;” and           •   economic changes and political uncertainties | 
    
    
      | In addition, stock markets have experienced significant price and volume     volatility in the past | 
    
    
      | This volatility has had a substantial effect on the     market prices of securities of many public companies for reasons frequently     unrelated or disproportionate to the operating performance of the specific     companies | 
    
    
      | In addition, the securities of many medical device companies,     including Intuitive Surgical, have historically been subject to extensive     price and volume fluctuations that may affect the market price of their     common  stock | 
    
    
      | If  these broad market fluctuations continue, they may     adversely affect the market price of our common stock |