Donald J Mizerk

An experienced litigator of patent infringement and other intellectual property and commercial cases, Don helps clients navigate the rules of a complex regulatory environment in order to reach their business goals.

A member of the firm’s Healthcare, Life Sciences & Pharmaceuticals industry team, Don has extensive experience at the trial and appellate level litigating highly specialized Hatch-Waxman statutory patent infringement and other actions involving prescription pharmaceutical drugs. These pharmaceuticals have included Wellbutrin XL (bupropion), Intuniv (guanfacine), Megace ES (megestrol acetate), Dexilant (dexlansoprazole), Lidoderm (lidocaine), Strattera (atomoxetine), Adderall XR (mixed amphetamine salts), Clarinex (desloratadine), Amrix (cyclobenzaprine), Enablex (darifenacin), Cymbalta (duloxetine), Luvox CR (fluvoxamine), Ryzolt (tramadol), Keppra XR (levetiracetam), Mirapex ER (pramipexole), Requip XL (ropinirole), Wellbutrin SR/Zyban (bupropion) and Ambien CR (zolpidem).

Among Don’s considerable patent litigation forums are injunction hearings, Markman proceedings, trials, and appeals to the U.S. Court of Appeals, Federal Circuit. He has represented clients in patent cases involving a wide range of technologies, including pharmaceuticals, aluminum alloys, silicon on insulator manufacturing, computer software and ergonomic computer accessories. He also has significant appellate experience and has argued many cases before federal and Illinois courts.

Don is a member of Husch Blackwell’s Partner Board. Before joining the firm, he was Chief Assistant State’s Attorney in the Cook County State’s Attorney’s Office.