312-616-5600 (phone)
312-616-5700 (fax)
Chicago Office

Related Practices

Education

George Washington University, LL.M. in Intellectual Property Law, 1994

Indiana University School of Law, J.D., 1992

Indiana University, B.A. in Chemistry and History, 1989

Salim A. Hasan

Member

Mr. Hasan practices entirely in the field of intellectual property law, with a particular emphasis on patents, trade secrets, and unfair competition matters. He has represented patent holders in patent, trade secret and unfair competition matters, as well as generic pharmaceutical manufacturers in Hatch-Waxman litigations. He also has assisted clients with developing and implementing programs and procedures to protect confidential, proprietary, and trade secret information.

Mr. Hasan also has extensive experience and an active practice in patent preparation and prosecution in the chemical and mechanical arts in the U.S. and foreign countries. He counsels clients with respect to patent portfolio management and strategies, licensing, opinions, and freedom to operate. In addition, he is experienced in patent interference practice before the U.S. Patent and Trademark Office, and has worked on opposition proceedings in the European Patent Office. Among the technologies in which he has recent experience are: pharmaceuticals, medical devices, specialty chemicals, coatings, plastics, pollution control devices, filtration systems, propellants, cosmetics, and various building materials.

Mr. Hasan joined Leydig, Voit & Mayer in 1998 after practicing in Indianapolis, Indiana and currently serves on the firm’s Professional Development Committee. He has been an adjunct professor of law in the area of patent prosecution at DePaul College of Law.

Professional Affiliations

Intellectual Property Law Association of Chicago (IPLAC)
American Intellectual Property Law Association (AIPLA)
Intellectual Property Owners Association (IPO)

Articles and Publications

Salim A. Hasan, "A Call for Reconsideration of the Strict Utility Standard in Chemical Patent Practice," 9 High Tech. L.J. 245 (1994)

Representative Matters

Mr. Hasan has represented a broad range of clients based in the U.S. or around the world in various intellectual property matters. His clients include corporations, research institutions, universities, and individual inventors. As for contested matters, representative examples are identified below:

Ortho-McNeil v. Lupin, Civil Action No. 10-CV-322 (D.New Jersey) (Ortho Tri-Cyclen Lo®)
Bayer v. Lupin, Civil Action No. 10-CV-1166 (D. Nevada) (Yaz®)
Medicis v. Lupin, Civil Action No. 09-CV-3062 (D. Maryland) (Solodyn®)
United States Gypsum Company v. Lafarge North America Inc., Civil Action No. 03-CV-6027 (N.D. Illinois)
Ciba Specialty Chemicals Corporation v. Zinkan Enterprises Inc., Civil Action No. C2-03-174, 68 USPQ2d 1150 (S.D. Ohio 2003)
United States Gypsum Company v. Michael Willoughby, Civil Action No. 06-CV-5890 (N.D. Illinois 2006)
Ehrenreich v. Brines, Patent Interference No. 105,500 (2006) (prevailed in interference for technology licensed to Johnson & Johnson)

Bar Admissions and Registrations

Illinois, 1993
Indiana, 1993
Registered to practice before the U.S. Patent and Trademark Office

Courts

U.S. Court of Appeals for the Federal Circuit
U.S. District Court for the Northern District of Illinois
U.S. District Court for the Southern District of Indiana
Illinois State Courts
Indiana State Courts

Languages

Hindi
Urdu