Skip to content Clair E. Wischusen


277 S. Washington Street
Suite 550
Alexandria, VA 22314

Three Logan Square
1717 Arch Street
Suite 610
Philadelphia, PA 19103

Florham Park
18 Columbia Turnpike
Suite 220
Florham Park, NJ 07932


J.D., cum laude, Temple University James E. Beasley School of Law

B.A., magna cum laude, Muhlenberg College


Clair Wischusen is a Partner in the Alexandria and Philadelphia offices of GRSM and a member of the firm’s Advertising & E-Commerce, Class Action, Commercial Litigation, Food & Beverage, Artificial Intelligence and Intellectual Property practice groups.

Clair is a skilled litigator with a national practice focused on complex commercial litigation.  She represents clients in all aspects of business-related litigation, including cases in federal and state courts involving advertising, food and cosmetic labeling, class actions, consumer protection, and intellectual property. Clair represents a broad range of clients across multiple industries, including advertising, e-commerce, cosmetics, food and beverage, healthcare, entertainment, and technology.

In addition to her litigation practice, Clair regularly advises advertisers, lead generators, affiliate networks, advertising agencies, and technology companies on issues involving advertising, marketing, e-commerce, privacy, social media, and intellectual property. Clair’s litigation experience allows her to effectively counsel clients when developing and implementing advertising and marketing campaigns to mitigate risk while maximizing commercial success. This includes reviewing advertising and marketing materials, providing counsel regarding advertising substantiation, and developing data privacy compliance programs. Clair also regularly advises clients on compliance with deceptive trade practice statutes and state privacy laws, as well as the Restore Online Shoppers’ Confidence Act (ROSCA) and state auto-renewal laws, the Telephone Consumer Protection Act (TCPA), and the Food, Drug, and Cosmetic Act (FD&C Act).

Clair interned for the Honorable Nan R. Shuker of the District of Columbia Superior Court and Philadelphia Office of Chief Counsel of the Internal Revenue Service. While in law school, she was an executive editor and staff member of the Temple Journal of Science, Technology and Environmental Law.


  • Virginia
  • District of Columbia 
  • New Jersey
  • Pennsylvania
  • U.S. Court of Appeals, Third Circuit
  • U.S. Court of Appeals, Fourth Circuit
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. District Court, Eastern and Western Districts of Virginia
  • U.S. District Court, District of New Jersey
  • U.S. District Court, Eastern, Western, and Middle Districts of Pennsylvania
  • U.S. District Court, District of Columbia