Search Team

Search by Last Name


Dr. Sushil Iyer (formerly Sushil Shrinivasan) is a Principal in the Dallas office of Fish & Richardson. He began his patent law career in 2006 as a technology specialist in the Firm’s San Diego office.  Between 2008 and 2012, he was a student-associate/patent agent in the Firm’s Washington D.C. office.  Since 2012, he has been with the Firm’s Dallas office, first as an associate and currently as a Principal.

Dr. Iyer’s practice emphasizes strategic counseling in US and international patent portfolio development and management for clients ranging from emerging companies to Fortune 100 corporations.  In this role, he has directly drafted and prosecuted as well as supervised the drafting and prosecution of several hundred patent applications.  He has also conducted numerous freedom-to-operate analyses, landscape searches, due diligence studies and patent opinion preparation to assist clients in bringing products to market.

Dr. Iyer’s practice additionally includes drafting, reviewing and negotiating all types of agreements and advising clients on agreement-related issues.  Examples of agreements on which he has worked include licenses for all types of intellectual property, software-as-a-service agreements, privacy policies, terms and conditions for use of software, master sales agreements, non-disclosure agreements to name a few.

Dr. Iyer’s technical focus is on the mechanical, computer-related and, broadly, in the applied sciences arts.  He has extensive experience in the following technologies: oil and gas drilling, completion, production and processing, medical devices, energy generation and conversion systems, self-driving vehicles, consumer electronics and accessories, and software.  In the software arts in particular, his technical focus has been in the areas of user interfaces and human-computer interaction, business intelligence, data analytics, operating systems, databases, e-commerce, client-side and server-side interactions, electronic document processing, and image/audio/video processing and management.

Dr. Iyer is also a member of the Firm’s group that provides internal training for patent prosecution and for licensing and intellectual property agreement preparation.  He is also a member several IP groups both within Texas and nation-wide. He works with these committees to organize CLE events on IP-related topics in North Dallas and other cities in Texas (for example, Houston, Austin) throughout the year.

Dr. Iyer is additionally a co-instructor of three courses offered by Patent Resources Group – the Patent Bar Review Course, the Claims Drafting Workshop and the Patent Administration Course. As a co-instructor of the Patent Bar Review Course, he teaches several topics of patent law and patent practice to aspiring patent practitioners and in-house legal team members to assist them in passing the patent registration exam conducted by the United States Patent and Trademark Office (USPTO). For the Claims Drafting Workshop, he works with junior or mid-level patent agents/associates to train them in all aspects of patent application preparation and prosecution as well as client management.  As a co-instructor of the Patent Administration Course, he teaches patent paralegals and patent administrators of law firms and in-house IP legal teams on aspects of patent practice and administration to be followed to comply with the rules set forth by the USPTO.

Before joining the Firm, he was a graduate research scientist at the University of Virginia from where he obtained a Doctorate in Mechanical Engineering and Applied Sciences, and, before then, at the University of Maryland – Baltimore County from where he obtained a Masters in Mechanical Engineering.  At these universities, he obtained hands-on experience in technologies related to fluid mechanics, heat and mass transfer, microfluidic devices, nanotechnology, software, optics, biochemistry, electrical circuits, and imaging technologies.


George Washington University Law School 2012

University of Virginia 2006
Mechanical Engineering, Ph.D.

University of Maryland, Baltimore County 2001
Mechanical Engineering, M.S.

University of Madras 1998
Mechanical Engineering, B.E.


  • U.S. Patent and Trademark Office 2007
  • Texas 2012


  • English
  • Hindi
  • Tamil

Other Distinctions

Invited Speaker at the State Bar of Texas’ 32nd Annual Course Advanced Intellectual Property Law, “Effects of Williamson: Inconsistent Interpretation of Nonce Terms” (March 1, 2019).

“We Got a Patent, Now What?” with Joseph Valentino, Microfluidics Congress: USA  (July 25, 2017).

Presenter at Texas General Counsel Forum: Negotiating, Preserving & Managing Your IP Rights In Your Vendor & Partner Agreements (June 14, 2017).

Co-Lecturer at Patent Resources Group’s Patent Bar Review Course (March 6-10, 2017).


Co-Author, Effects of Williamson v. Citrix: Inconsistent Interpretation of Nonce Terms (March 1, 2019).

*Last name was previously Shrinivasan.

S. Shrinivasan, P.M. Norris, J.P. Landers, J.P. Ferrance, “A low-cost, low-power consumption miniature laser induced fluorescence system for DNA detection on a microfluidic device,” Journal of the Association for Laboratory Automation, 2006, 11 (4).

P.M. Norris, S. Shrinivasan, “Aerogels: Unique material, fascinating properties and unlimited applications,” Annual Review of Heat Transfer, 2005, 14, pp. 385-408.

S. Shrinivasan, M.C. Breadmore, B. Hosticka, J.P. Landers, P.M. Norris, “Toward optimization of macroporous silica gels for application to capillary or microchip-based CEC and LC,” Journal of Non-Crystalline Solids, 2004, 350 (15), 391-396.

S. Shrinivasan, C.D. Eggleton, “Viscosity of animal erythrocyte suspensions mixed with a perfluorocarbon emulsion,” Artificial Cells, Blood Substitutes, and Biotechnology, 2004, 32(3), 387-400.

M.C. Breadmore, S. Shrinivasan, J. Karlinsey, J.P. Ferrance, B. Hosticka, P.M. Norris, J.P. Landers, “Towards a microchip based chromatographic platform. Part 2: Sol-gel phases modified with polyelectrolyte multilayers for capillary electrochromatography,” Electrophoresis, 2003, 24(7-8), 1261-1270.

K.M. Davidson, S. Sushil, C.D. Eggleton, M.R. Marten, “Using computational fluid dynamics software to estimate circulation time distributions in bioreactors,” Biotechnology Progress, 2003, 19(5), 1480-1486.

M.C. Breadmore, S. Shrinivasan, K.A. Wolfe, M.E. Power, J.P. Ferrance, B. Hosticka, P.M. Norris, J.P. Landers, “Towards a microchip based chromatographic platform. Part 1: Evaluation of sol-gel phases for capillary electrochromatography,” Electrophoresis, 2002, 23(20), 3487-3495.

What's trending with Sushil