Karolina Jesien

Karolina Jesien is an attorney specializing in patent and intellectual property litigation, with a primary focus on defending clients in complex technology disputes. Her practice encompasses a broad range of hardware and software technologies, including semiconductor fabrication, flash/DRAM memory, mobile and client-server communication, digital imaging, database technologies, web-based collaboration software, remote access, and data transfer/security. Her experience consistently positions her on the defendant side, aligning with her three tracked appearances representing defendants and zero for plaintiffs.

Currently serving as Of Counsel at Fish & Richardson P.C., Ms. Jesien has also previously appeared with Wilmer Cutler Pickering Hale and Dorr. Fish & Richardson is noted for its top-ranked patent litigation practice, frequently representing Fortune 100 companies in high-stakes, competitor-to-competitor patent litigation across various U.S. courts, the Federal Circuit, the ITC, and the Patent Trial and Appeal Board (PTAB).

A notable case in her portfolio is Advanced Integrated Circuit Process LLC v. Taiwan Semiconductor Manufacturing Company, Ltd., where she represents the defendant Taiwan Semiconductor Manufacturing Company Limited (TSMC). This case involves active inter partes review (IPR) proceedings concerning the asserted patents, with TSMC moving to stay the district court litigation pending the outcome of these IPRs. Her firm, Fish & Richardson, has a strong reputation for handling IPR and other post-grant proceedings, leveraging integrated patent prosecution and litigation skills.

Ms. Jesien earned her B.S. in Electrical and Computer Engineering from McGill University in 2002 and a J.D. with an IP concentration from Benjamin N. Cardozo School of Law in 2007. She is admitted to practice in New York (2008) and Florida (2021), and before the U.S. Court of Appeals for the Federal Circuit (2015).