Fabian M. Koenigbauer

Clients turn to Fabian Koenigbauer because he brings a rare combination of prosecution capability, litigation skill, technical depth, and business‑driven judgment to their most significant intellectual property challenges. He provides practical, commercially focused guidance across a broad spectrum of IP matters, supporting major commercial projects and strategic initiatives at the intersection of technology, regulation, and market strategy.

Fabian helps innovative companies protect and maximize the value of their intellectual property assets before the U.S. Patent and Trademark Office (USPTO) and numerous foreign patent offices. His work covers a wide range of technologies, including consumer healthcare products, medical devices, industrial equipment, semiconductor manufacturing, polymers, and agrochemicals, with a particular emphasis on the life sciences sector. He manages large global patent portfolios across more than 60 jurisdictions and serves as de facto IP counsel for companies without in‑house IP teams.

Fabian also represents clients in high‑stakes patent disputes before U.S. district courts, the Patent Trial and Appeal Board (PTAB), the International Trade Commission (ITC), and appellate courts. His litigation experience spans the full life cycle of disputes, including pre‑litigation investigations, discovery, trials, post‑grant proceedings, and appeals, and includes enforcing and defending patents in parallel U.S. and foreign actions. He regularly advises on freedom‑to‑operate analyses, infringement and validity opinions, as well as litigation‑driven portfolio strategy.