Hahn Loeser & Parks

Hahn Loeser & Parks LLP is a full-service law firm with a history spanning over a century, headquartered in Cleveland, Ohio. The firm maintains an extensive geographic footprint with additional offices in Columbus, Ohio; Naples, Fort Myers, Orlando, Sarasota, and Tampa, Florida; San Diego, California; and Chicago, Illinois. With over 140 attorneys, Hahn Loeser has been recognized by The National Law Journal as one of the 500 largest law firms in the United States. The firm has also received national recognition from "Best Law Firms" by Best Lawyers® in 16 practice areas for 2026, and has been identified four times as a "Go-To Law Firm" for Top 500 Companies by American Lawyer Media (ALM) in intellectual property and commercial litigation.

The firm's intellectual property litigation practice emphasizes a technically sound approach, with a team comprising patent attorneys and agents, many holding advanced technical degrees, experienced in high-stakes patent infringement litigation. Their expertise spans diverse technology areas including pharmaceuticals and biotechnology (notably Hatch-Waxman litigation involving drugs like Norvasc, Actonel, and Boniva), medical devices, materials science, alternative energy, electrical, electro-mechanical, mechanical arts, information technology, software, and business methods.

Hahn Loeser & Parks demonstrates a balanced approach in patent litigation, representing both plaintiffs and defendants. This is reflected in their tracked appearances, which include a plaintiff-side engagement in an "Untitled case" and a defendant-side role for SimpliSafe, Inc. in IoT Innovations LLC v. SimpliSafe, Inc. The firm actively defends operating companies against assertions from entities like IoT Innovations LLC, which is described as a Non-Practicing Entity (NPE).

Notable engagements include Steven E. Feldman serving as lead counsel in significant pharmaceutical cases, successfully obtaining summary judgment of patent invalidity and defeating preliminary injunctions for generic drug clients. In IoT Innovations LLC v. SimpliSafe, Inc., where John J. Cunniff served as of counsel, the firm defended SimpliSafe against allegations of infringing seventeen patents related to smart device communications; SimpliSafe's motion to dismiss was denied. The firm's practice also encompasses proceedings before the U.S. Patent and Trademark Office, including advising clients on Inter Partes Review (IPR) and Post-Grant Review (PGR) strategies.

Key partners in the intellectual property litigation group include Steven E. Feldman, who leads the practice and is Partner-in-Charge of the Chicago office, and John J. Cunniff, a Florida Bar Board Certified Specialist in Intellectual Property Law. Other prominent IP litigation partners include Nathan B. Webb and Scott M. Oldham, who handle a wide array of patent, trademark, copyright, and trade secret disputes across various technologies.