David L. Anstaett

David L. Anstaett is a patent litigator with a primary focus on the pharmaceutical and biotechnology sectors. He represents clients in complex patent infringement matters, licensing disputes, and regulatory strategy, particularly concerning the Hatch-Waxman Act. While his broad practice areas also encompass medical device and life sciences technologies, one tracked case, Brain Corporation v. Avidbots Corp. et al., involves technology related to autonomous navigation, robotic mapping, and optical object detection.

Anstaett predominantly represents defendants and petitioners in patent disputes. His tracked appearance in Brain Corporation v. Avidbots Corp. et al. was on the defendant side, where he served as lead counsel. This preference is consistent with his role as lead counsel for Mylan in the In re Ozempic (semaglutide) Patent Litigation and for Allele Biotechnology & Pharmaceuticals against Regeneron Pharmaceuticals, Inc..

Currently, David Anstaett is a partner at Perkins Coie, where he is recognized as an IP Star by Managing IP. The provided authoritative case list indicates his appearance in Brain Corporation v. Avidbots Corp. et al. at Fish & Richardson. This discrepancy may reflect a previous affiliation or a data entry difference, as current public profiles consistently place him at Perkins Coie.

His notable engagements include successfully representing Allele Biotechnology & Pharmaceuticals against Regeneron Pharmaceuticals, Inc. in a suit concerning its mNeonGreen fluorescent protein technology, which settled prior to trial after favorable rulings on patent validity and infringement. He also served as lead counsel for Mylan in Hatch-Waxman district court and inter partes review proceedings related to Novo Nordisk's Ozempic®, achieving a favorable settlement. Anstaett possesses significant experience before the Patent Trial and Appeal Board (PTAB), regularly arguing high-stakes pharmaceutical cases in inter partes review (IPR) proceedings.

Anstaett earned his J.D., summa cum laude, from the University of Wisconsin Law School in 2001, where he was a Senior Articles Editor for the Wisconsin Law Review. He received his B.A. in Political Science from the University of Kansas in 1992. He is admitted to practice in Wisconsin and before the Supreme Court of the United States, the U.S. Court of Appeals for the Federal Circuit, and several U.S. District Courts.