D. Andrew Portinga

D. Andrew Portinga is a litigator at Miller Johnson, focusing his patent litigation practice primarily on defending clients against infringement claims across diverse technology sectors. His experience includes matters involving mechanical devices, such as dental products and medical technologies, as evidenced by his role as counsel in Solmetex, LLC v. Ascentcare Dental Products, Inc., and his representation in a patent case for Stryker Corporation. His tracked cases show a consistent emphasis on the defendant side of patent disputes.

As a Member at Miller Johnson, Mr. Portinga contributes to a broader Intellectual Property practice that offers services in patent, trademark, copyright, licensing, and litigation. A notable patent litigation matter from his career involved acting as local counsel for Stryker Corporation in Stryker v. Zimmer Inc., a case that resulted in a $256 million judgment for the client.

Mr. Portinga's practice also encompasses patent-validity challenges before the Patent Trial and Appeal Board (PTAB), including Inter Partes Reviews (IPRs) and Post-Grant Reviews (PGRs). The Solmetex case, for instance, involves a motion to stay litigation pending PTAB institution decisions. He earned his J.D. from the University of Michigan Law School in 1996 and holds a B.A. in mathematics from Kalamazoo College. He is admitted to practice in Michigan.