• vcard
D 312.873.3625
F 312.602.3936
  • Education
    • J.D., magna cum laude, with pro bono notation, University of Illinois, 2009, Dean's List; Lamet Scholar, Civil Litigation Clinic; Member & Administrative Editor, Journal of Law, Technology & Policy
    • B.S., University of Illinois, 2006
  • Bar Jurisdictions
    • Illinois, 2010
    • Admitted to practice before the United States Patent and Trademark Office, 2012
  • Court Admissions
    • U.S. District Court, Eastern District of Texas, 2011
    • U.S. District Court, Northern District of Illinois, 2012
    • U.S. Court of Appeals, Federal Circuit, 2013
    • U.S. Court of Appeals, Seventh Circuit, 2014
Mark Deming is an intellectual property attorney who regularly advises large and small companies throughout the country. He practices in patent, trademark, and trade dress areas, among others. Mark is involved in all aspects of case development, from initial assessment to discovery, motions practice, claim construction, expert witnesses, trial and appeal. He focuses extensively on Hatch-Waxman Act Paragraph IV litigation, where he manages all aspects of litigation primarily for generic challengers but also for brand-side pharmaceutical companies. Mark is also a registered patent attorney.

Prior to joining Polsinelli, Mark clerked for two years with District Judge Michael Schneider and Magistrate Judge John Love in the United States District Court for the Eastern District of Texas, one of the nation’s busiest patent dockets. As a clerk, he developed broad experience with including patent litigation and assisted the court with conducting jury and bench trials, entering findings of fact and conclusions of law, holding Markman hearings, ruling on dispositive motions, evaluating the sufficiency of contention disclosures, resolving discovery disputes, and interpreting local rules.

Mark has a Bachelor of Science degree in Computer Engineering from the University of Illinois Department of Electrical and Computer Engineering.
  • Lead associate on Hatch-Waxman Act cases for major generic product developer, including both as ANDA-filer as well as patentee or NDA holder.
  • Drafted successful motion to dismiss in first-of-its-kind patent infringement case, invalidating all asserted patents under Alice, despite the fact that some of the asserted patents had been examined and issued after the Patent Office’s interim Alice guidance.
  • Contributed to multiple successful appeals, including by being principal drafter of appellate briefs.  
  • Drafted Markman briefs for pharmaceutical company that resulted in favorable claim construction decision.
  • Drafted successful motion to transfer infringement action from a patent rocket docket to a more convenient venue.
  • Member of team who regularly defends clients accused of patent infringement by non-practicing entities and patent assertion entities.
  • Member of team who defended several defendants in multi-district patent litigation.