Amanda S. Williamson
Amanda Williamson focuses her practice on complex intellectual property litigation in the life sciences industry relating to pharmaceuticals, biologics, biosimilars, and medical devices. Clients have entrusted Amanda to handle patent litigation that involves their market-leading and newly launched products. Outside of the life sciences, Amanda has been involved in patent infringement cases with a variety of technologies, including ink jet printing, RFID enabled devices, networked devices and related software, cellular devices, and standard essential wireless technologies.
Amanda has experience representing companies in US district courts across the country, the US Court of Appeals for the Federal Circuit, and the International Trade Commission (ITC). Amanda also works with clients on post-grant proceedings, including inter partes reviews and ex parte reexamination, and provides clients with strategic advice on patent portfolio management, freedom to operate analysis, and IP due diligence.
Following law school, Amanda served as a judicial law clerk to Judge James B. Zagel of the US District Court for the Northern District of Illinois. She also previously worked as a consultant at an accounting firm, where she assisted financial expert witnesses in analyzing and calculating damages in cases involving patent infringement and breach of contract claims.
- A patent holder and leading provider of hemophilia products in patent infringement suit in the District of Delaware involving a bispecific antibody treatment for hemophilia
- A biopharmaceutical company in arbitration related to its injectable collagenase therapy used in the treatment of cellulite
- A leading RFID-enabled equipment manufacturer in patent infringement action in the Western District of Texas involving its radio frequency identification technology
- The world’s leading inkjet printer manufacturer in 33-patent infringement, multi-case infringement suit in the Western District of Texas
- A patent owner in the ITC in dispute regarding method of manufacturing recombinant factor VIII and successfully obtained summary determination of infringement before the final hearing; the case settled favorably after the ITC ruled in client’s favor on domestic industry on appeal, validity, and infringement
- A medical products company in the Eastern District of Texas in patent infringement case relating to features of the company’s website that settled favorably for the client
- A printer and device manufacturer in the Northern District of Illinois in 16-patent infringement dispute involving seminal RFID technologies and printer networking software; the case settled favorably after Markman proceedings
- A mining tool manufacturer in patent infringement litigation in the Southern District of Texas as trial and appellate counsel and successfully appealed the district court’s grant of a preliminary injunction to the Federal Circuit after which the case settled favorably for the client
- A cellphone manufacturer as trial and appellate counsel in a 19-patent, multidistrict patent litigation (Western District of Wisconsin, District of Delaware, and Southern District of Florida) and 337 investigation involving standard essential patents relating to wireless networking and cellphone features and functionality
- A cellphone manufacturer as trial and appellate counsel in an antitrust and breach of contract matter in the Western District of Wisconsin concerning standard-essential patent licensing practices
- A generic drug manufacturer in Lanham Act false advertising case in the Northern District of Illinois
- A Fortune 100 internet-based retailer in a copyright dispute in the Northern District of Illinois and obtained dismissal of the case
- In pro bono matters, acted as lead appellate counsel for previously removed alien in his appeal before the US Court of Appeals for the Seventh Circuit, as well as a criminal defendant in a state post-conviction challenge to the constitutionality of his life-without-parole sentence as a minor under Graham v. Florida
- Northwestern University School of Law, 2003, J.D.
- Northwestern University Kellogg School of Management, 2003, M.B.A.
- Northwestern University, 1998, B.A., chemistry
- Illinois
- US Court of Appeals for the Sixth Circuit
- US Court of Appeals for the Seventh Circuit
- US Court of Appeals for the Eleventh Circuit
- US Court of Appeals for the Federal Circuit
- US District Court for the Northern District of Illinois
- US Patent and Trademark Office

Recognized, Patent Star – Illinois, Managing Intellectual Property (2025)
Recognized, IAM Patent 1000: The World’s Leading Patent Professionals (2023–2025)
Life Sciences Star, General Patent Litigation, LMG Life Sciences Awards Americas (2023, 2024)
Life Sciences Star, Intellectual Property, LMG Life Sciences (2022)
Member, Practice Group of the Year, Intellectual Property, Law360 (2019, 2024)
Director, Joffrey Ballet of Chicago
