FacultyFaculty/Author Profile
Carl B. Wischhusen

Carl B. Wischhusen

Cozen O'Connor

New York City, NY, USA

Carl B. Wischhusen joined the firm in 2011 and is resident in the New York Midtown office. Carl has extensive experience in patent prosecution, opinions, counseling, and litigation in a wide variety of technology areas, including electrical engineering, business/finance, biomedical engineering, and mechanical engineering.

Carl’s current practice focuses primarily on patent prosecution, which he has been doing since 1996, as well as client counseling and opinion preparation. He handles a large portfolio of U.S., international, and foreign patent applications, including the preparation of patent applications, amendments, appeals, reexaminations, reissues, and other prosecution-related filings. He counsels clients on prosecution strategy and prepares patentability, freedom to operate, and validity opinions. Carl’s practice also includes advising clients regarding strategies for patent portfolio management and development, licensing, engineering design changes and design-around solutions, and other patent-related legal issues.

Carl has experience managing patent prosecution for both large and small high-technology companies, as well as managing a portfolio of electrical and biomedical engineering technologies for a large university. His litigation experience includes preparation of claim construction briefs and invalidity contentions, infringement analysis of accused products, and validity analysis of asserted patents. Other experience includes pre-litigation analysis of portfolios of pending patent applications to evaluate strength and developing prosecution strategies in view of potential future litigation.

Carl earned an undergraduate degree in Electrical Engineering (B.S.E.E.) from Virginia Polytechnic Institute and State University in 1987, a Master's Degree in Electrical Engineering (M.S.E.E.) from Johns Hopkins University in 1991, and a law degree (J.D.) from Georgetown University Law Center in 2000.

Practice Areas

Intellectual Property
Intellectual Property Litigation
Trademark & Copyright


Georgetown University Law Center, J.D., 2000
Johns Hopkins University, M.S., 1991
Virginia Polytechnic Institute and State University, B.S.E.E., 1987

Bar Admissions

New York
United States Patent and Trademark Office

Court Admissions

U.S. District Court Eastern District of New York
U.S. District Court Southern District of New York
Carl B. Wischhusen is associated with the following items:
Live Seminar  Live Seminar Fundamentals of Patent Prosecution 2015: A Boot Camp for Claim Drafting & Amendment Writing, Monday, June 15, 2015, New York, NY
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