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 worked in all aspects of litigation in Federal Courts for such matters, including discovery, motion practice, hearings, expert discovery, pre-trial practice, and trial presentation. He also has assisted clients with developing and implementing programs and procedures to protect confidential, proprietary, and trade secret information.

Mr. Hasan 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:

• United States Gypsum Company v. Lafarge North America Inc., Civil Action No. 03-CV-6027 (N.D. Illinois-Pending)
• 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. 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

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