Marc Cohn is a lead trial attorney who represents clients in high-stakes patent and commercial disputes. For more than 25 years, he has served as lead and co-lead counsel before juries, judges, and arbitration panels in cases involving patent infringement, contracts and license agreements, trade secrets, false advertising, unfair competition, fraud, breach of contract, and other business claims. He leads cases from the outset and also joins existing teams as trial counsel to sharpen strategy, examine witnesses, and strengthen technical and damages presentations.
Marc’s recent work as lead or co-lead trial counsel includes a complete defense jury verdict for Charter Communications in an Eastern District of Texas patent case, a $33.4 million jury verdict for Lindt & Sprüngli, a jury trial victory for Boston Scientific, and a jury trial win for Briggs & Stratton. He also played a key role in preparing ACQIS’s patent case against Quanta for trial, helping secure a favorable cash settlement shortly before trial.
With an academic background in engineering physics and electrical engineering, Marc understands complex technologies and translates them into clear, persuasive narratives. He has examined technical, medical, regulatory, economic, and accounting experts, as well as executives, inventors, engineers, sale/marketing directors, and other company witnesses. His experience spans a wide range of technology, including communications and networking systems, software, medical devices, and logistics and warehouse operations.
Marc’s approach to trial combines technical rigor with an understanding of the people behind the dispute. He believes empathy is essential to effective advocacy: jurors need to understand the client’s circumstances, the decisions its people made, and why those decisions made sense at the time. He identifies these human themes early and uses them to guide case strategy, witness preparation, and the presentation of evidence.
Marc’s practice extends to appeals, Patent Office matters, and coordinated international litigation. He has served as co-lead counsel in more than six Federal Circuit appeals and represented clients in inter partes review proceedings before the U.S. Patent and Trademark Office. He has managed patent disputes involving proceedings in the United States, Germany, the United Kingdom, the Netherlands, Ireland, and Canada, and helped develop strategy for European Patent Office oppositions.
Marc also advises clients on intellectual property valuation, litigation risk, and potential damages in connection with transactions, investments, and anticipated disputes. Drawing on his technical and quantitative background, he helps clients assess both the strength of their positions and the financial consequences of litigation.
Beyond litigation, Marc helps companies present complex scientific, medical, and regulatory issues to decision-makers. His work includes building expert teams, preparing executives for presentations to boards and investors, and coordinating submissions to the FDA, Health Canada, and the European Medicines Agency. Across these assignments, he bridges the gap between technical experts and the audiences they need to persuade.
Experience
- Touchstream Tech., Inc. v. Charter Communications, Inc. Represented Charter Communications in securing a complete defense jury verdict of no infringement of patent claims asserted by Touchstream in three patents related to casting of content over multiple devices in the Eastern District of Texas.
- Lindt & Sprungli (North America), Inc. et al v. GXO Warehouse Company. Represented Lindt & Sprüngli, Ghirardelli Chocolate Company, and Russell Stover as trial counsel in securing a significant, US$33.45 million verdict after a two-week jury trial in the Western District of Missouri.
- Boston Scientific v. Cook Group. Secured a complete plaintiff’s win for our client Boston Scientific with a US$158 million jury verdict in a patent litigation between competitors in the endoscopy space. The jury found Boston Scientific’s patents valid and infringed, that Cook’s infringement had been willful, and awarded the full amount of damages sought by our client.
- Entropic Communications v. Charter Communications, et. al. Represented Charter Communications in a six-patent, multi-billion dollar case in the Eastern District of Texas.
- Hologic v. Minerva. For Hologic as plaintiff, obtained summary judgment that the defendant Minerva was liable for patent infringement, a favorable jury verdict on damages, and a complete defense verdict on all counterclaims.
- Boston Scientific v. Nevro. For Boston Scientific, obtained complete defense victory on summary judgment.
- TC Technologies v. Sprint. Represented TC Technologies asserting a patent covering LTE cellular technology against Sprint Communications. (2019)
- Nordic v. Leading Mobile Phone Manufacturer. Represented leading mobile phone manufacturer in a multi-patent defense in the Western District of Texas, resulting in a settlement very favorable to our client.
- Inflow v. Boston Scientific. Won complete defense victory for Boston Scientific against a claim for US$105 million for patent infringement relating to coronary stents.
- [Confidential Claimant] v. Hologic. Defeated arbitration claim, in excess of US$25 million, against Hologic for expansion of royalty base and term under a license agreement relating to diagnostic kits.
- [Confidential Claimant] v. GE Healthcare. Won defense victory for GE Healthcare against claim for tens of millions of dollars in royalties for magnetic resonance imaging technology.
- GE Healthcare v. ABI. Won complete plaintiff's victory for GE Healthcare in an arbitration involving the interpretation of a license agreement relating to DNA sequencing reagents and kits. GE was awarded past damages based on an increase in royalty rates for certain products, plus interest, fees, and costs. Total judgment exceeded US$30 million.
- Freedom Wireless Inc. v. Verizon Wireless. In multi-defendant suit involving patents on telecommunications systems and equipment, represented only victorious defendant.
- Manufacturer of miniature electronic amplifiers and pulse-width control systems in defending a series of patent and trade secret suits and arbitrations, and obtained walkaway settlement.
- Boston Scientific v. Cook/Guidant. The court granted Boston Scientific's motion for summary judgment and entered a permanent injunction barring Cook and Guidant from collaborating to exploit licensed technology in the multi-billion dollar drug-eluting stent market.
- Boston Scientific v. Medtronic. Won judgment for Boston Scientific in excess of US$160 million and secured permanent injunction against future infringing sales of coronary stent systems.
- Kimberly-Clark v. Procter & Gamble. Represented Procter & Gamble in the "diaper wars" arbitration in defense of a patent infringement claim against Pampers diapers. The arbitration panel found the patent-at-issue invalid, and the panel's opinion was upheld on appeal.
- Bonzel v. Pfizer, et al. Represented Boston Scientific in Minnesota state and federal cases involving a claim for over US$400 million relating to the interpretation of a patent license agreement. The state and federal courts dismissed the cases for forum non conveniens in favor of a German forum. Affirmed by the Minnesota Court of Appeals and the Federal Circuit Court of Appeals.
Perspectives
Recognition
Credentials
Education
- J.D., University of Virginia School of Law, 2000
- B.S., Applied and Engineering Physics, Cornell University, 1997, cum laude
Admissions
- District of Columbia
- U.S. Court of Appeals for the First Circuit
- U.S. Court of Appeals for the Seventh Circuit
Activities
- Member, District of Columbia Bar Association
- Member, Federal Circuit Bar Association
- Member, American Intellectual Property Law Association
- Member, Licensing Executive Society
- Member, Transportation Lawyers Association