Patrick Duplessis advises clients in all areas of IP law, with a focus on patent portfolio development and enforcement. Mr. Duplessis represents clients of all sizes, from large multinational corporations to venture-backed startups and individuals. He has extensive experience helping Europe-based clients obtain and enforce IP rights in the U.S.

Mr. Duplessis has drafted and prosecuted countless patent applications in a wide range of technologies, particularly in the medical, mechanical, electrical, and computer arts.  He brings a litigation-informed perspective to his patent practice, and excels at conveying complex ideas in a simple manner understandable to all.

Mr. Duplessis also manages trademark and copyright portfolios, and advocates for clients in litigation and other contested matters related to patents, trademarks, copyrights, unfair competition, contracts, privacy, and free speech.

Prior to joining WHIPgroup, Mr. Duplessis practiced at an IP boutique firm and in the IP group of a large full-service firm.  Before graduating law school, he was a law clerk at the Burnham Institute for Medical Research in La Jolla, California, and he held undergraduate research positions at Massachusetts General Hospital and Northwestern University.


J.D., University of San Diego School of Law 2009
B.S., Boston University, Biomedical Engineering 2006


Executive Editor, San Diego Law Review

Court Admissions

State of California
State of Connecticut
Commonwealth of Massachusetts
U.S. Patent and Trademark Office
U.S. District Courts (California, Massachusetts and Connecticut)

Professional Associations

Judge Janet Bond Arterton American Inn of Court
Connecticut Intellectual Property Law Association (CIPLA)
The Federalist Society


Only Minimalists Should Prosecute Patents, Medium, January 19, 2021
Patent Examiner Interview Should Occur AFTER You Respond to Office Rejections, Medium, August 28, 2020

Blog Posts

Tech and Telecom Giants Take the Lead in the Self-Driving Vehicle Patent Race, May 13, 2019
WHIPgroup attorneys achieve sweeping victory at Arterton Inn of Court mock oral argument, February 7, 2019
Supreme Court Petition Highlights Split at Federal Circuit Concerning Role of the Specification in Claim Construction, November 15, 2018
Time to Think Outside the Box: Foreign Patent Filling in China, July 12, 2017
Federal Circuit Again Considers Whether Preamble Limits Scope of Patent Claim, August 29, 2017
Federal Circuit Clarifies Post-AIA On-Sale Bar, May 3, 2017
PTAB Rules That State Entities Are Entitled To 11th Amendment Sovereign Immunity Defense Against The Institution Of An IPR, February 7, 2017

Recent Litigation/Contested Matters

NAF v. Ctr. for Med. Progress, et al. (N.D. Cal.) (copyright)
Karl Storz Endoscopy-America Inc. v. Integrated Medical Systems Intl. Inc. (N.D. Ala.) (patent)
Synaptive Medical Inc. v. Karl Storz Endoscopy-America, Inc., IPR2018-00462 (PTAB) (patent)
Karl Storz Endoscopy-America, Inc. v. Synaptive Medical, Inc. (S.D.N.Y.) (patent)
Karl Storz Endoscopy-America, Inc. v. Solos Endoscopy, Inc. (D. Mass.) (trademark)

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