Marissa M. Rosenbaum
Marissa Rosenbaum focuses on all areas related to domestic and international trademark and copyright law, including, counseling, prosecution, maintenance, audits, policing, and enforcement. She also advises clients on the development and management of global trademark portfolios, counterfeit enforcement, intellectual property transactions, and unfair competition.
Marissa represents clients in several industries, including food and beverage, software, e-commerce, technology and electronic devices, retail, media and entertainment, medical devices, personal care products, and jewelry. She not only helps secure and protect trademark and copyright registrations, she also assesses risks, identifies gaps in protection, and recommends creative solutions to her clients when dealing with issues related to searches, online enforcement, assignments, and infringement.
In addition to her prosecution practice, Marissa also has experience representing clients in U.S. federal court as well as opposition and cancellation proceedings before the Trademark Trial and Appeals Board. Marissa’s experience in litigation and adversarial proceedings, as well as counseling and prosecution, enables her to give clients well-rounded and thoughtful legal advice with respect to all of their trademark and copyright needs.
- Recognized in the "Best Lawyers 2025 Guide: Ones to Watch" for Intellectual Property Law in Best Lawyers in America (2024)
Litigation Blog
- What’s Enough to Show Information Is “Trade Secret” for Filing Under Seal?
- It’s a Date – Twitter Reply Proves Prior Art Publication Date
- Limiting Terms in Preamble May Render Entire Preamble Limiting
- Pencil Shaped Chalk Holder Is a Non-Copyrightable Idea
- Enjoining Speech and the Right to Allege Patent Infringement
- Prosecution History Estoppel Bars Infringement Claim Under Doctrine of Equivalents
Speeches & Seminars
Speaker, "How to Think About Trademarks in the Healthcare World", Orange County Intellectual Property Law Association (February 23, 2023)
Speaker, "Protecting Your Healthcare Brand: Trademark Considerations and Challenges Unique to the Healthcare Industry", Amazon In-House Counsel Presentation (January 26, 2023)
Speaker, “IP Considerations and Strategies: Reducing Risk for Online Content”, In-House Client Presentation (July 2020)