Carl Wischhusen

Cozen O'Connor PC

Carl B. Wischhusen has extensive experience in litigation, patent prosecution, and due diligence in the electrical and mechanical fields. His current practice includes: Preparation of claim construction briefs, invalidity contentions, and other litigation filings. Performing validity and infringement analyses in support of litigation.

Preparation of briefs and responses for inter partes reviews. Preparation of invalidity, patentability, and freedom-to-operate opinions. Counseling clients on prosecution strategy, design-around solutions, and patent licensing.

Performing day-to-day work on all aspects of prosecution for U.S., PCT, and foreign patent applications for clients such as Orange (formerly France Telecom), Siemens, Osram, and Konica-Minolta.

Preparing patent applications, amendments, reexams, reissues, appeal briefs, and other prosecution-related papers, and conduct interviews. Performing intellectual property due diligence in support of business and investment deals, including analysis of patent portfolio for ownership, validity, and scope of coverage.

Performing analysis of existing and proposed products for freedom-to-operate. Conducting review of IP-related representations and warranties and other IP-related portions of asset purchase and licensing contracts.


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


  • New York
  • United States Patent and Trademark Office


  • U.S. District Court — Eastern District of New York
  • U.S. District Court — Southern District of New York


Rate : $$$

What types of cases Attorney Carl Wischhusen & Cozen O'Connor PC can handle?
Cozen O'Connor PC can handle cases related to laws concerning Copyright Application, Litigation, Education, Intellectual Property, Trademark infringement. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is Cozen O'Connor PC located?
Cozen O'Connor PC is located at 45 Broadway #16th+floor, New York, NY 10006, USA. You can reach out to Cozen O'Connor PC using their phone line (212) 883-4991. You can also check their website or email them at [email protected].
How much would it cost to hire Cozen O'Connor PC?
Carl Wischhusen lawyer charges are specific to each case. However, they work with contingency fees and its ranges from $$ to $$$. They also provide free consultation [and no obligation quotes] if you are interested to hire.
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Cozen O'Connor PC
45 Broadway #16th+floor, New York, NY 10006, USA
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