David Krinsky is a litigator who focuses on patent and other high-technology litigation.  He has litigated major patent cases in technical fields ranging from molecular biology and medicinal chemistry to software, telecommunications, and energy.  As a former software engineer, David focuses a significant part of his practice on litigation in the field of computer technology, and he has defended several major software companies against charges of patent infringement.  Another significant portion of David’s practice is Hatch-Waxman pharmaceutical patent litigation, in which David has worked to uphold the validity and infringement of patents covering both active pharmaceutical ingredients and pharmaceutical formulations.  

In addition to practice before the federal district courts, David is a registered patent attorney who routinely appears before the Patent Trial and Appeal Board of the U.S. Patent and Trademark Office in inter partes review (IPR) proceedings.  In this capacity, he has served as lead counsel in several IPRs in the software industry, as well as multiple IPRs on behalf of pharmaceutical clients. 

Raised in Connecticut, David received an A.B. in Physics, cum laude, from Harvard College in 1999, and a J.D., summa cum laude, from Georgetown University Law Center in 2005.  At Georgetown, he was an Executive Editor of the Georgetown Law Journal.  After clerking for Judge Roger Titus of the U.S. District Court for the District of Maryland and Judge Richard Linn of the U.S. Court of Appeals for the Federal Circuit, David joined Williams & Connolly LLP in 2008.

Representative Experience

  • Represented Eli Lilly and Company at multiple trials and in the Federal Circuit in its defense of a patent covering the blockbuster anti-cancer drug ALIMTA.® 
  • Represented Bayer in the district court and Federal Circuit in a patent suit filed by Biogen relating to recombinant DNA technology.
  • Represented Petroleum Geo-Services, including as arguing counsel before the PTAB, in multiple inter partes review proceedings relating to seismic surveying technology.
  • Represented Google in multiple inter partes review proceedings challenging patents asserted against Google.
  • Represented Alcon at trial and on appeal in multiple Hatch-Waxman patent litigations relating to ophthalmic pharmaceutical products.
  • Represented an inventor in a patent dispute regarding a computerized financial trading system, in which he argued a summary judgment motion regarding invalidity under 35 U.S.C. § 101 and subsequently drafted panel and en banc appeal briefs to the U.S. Court of Appeals for the Federal Circuit. 
  • Represented a major computer company in trade secret litigation regarding software for processing Big Data
  • Represented a major smartphone manufacturer in standards-essential telecommunications software litigation.

Education

Recognitions

Selected to Washington, D.C. “Rising Stars” list, Super Lawyers, 2014-2016

Admissions

Government Service

Law Clerk, Judge Richard Linn, United States Court of Appeals for the Federal Circuit, 2006-2008

Law Clerk, Judge Roger W. Titus, United States District Court for the District of Maryland, 2005-2006

back to top