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Dr. Langfinger & Partner

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John R. McNair of Winston & Strawn LLP in Chicago handles patent litigation across pharmaceuticals, chemicals, and electronics with expertise in Hatch-Waxman Act cases.

Dr. Langfinger & Partner: IP firm in Frankfurt am Main

John R. McNair of Winston & Strawn LLP, based at 35 W Wacker Dr, Chicago, IL, is an Of Counsel attorney with extensive experience in patent litigation. His practice includes:

  • Pharmaceutical patent litigation under the Hatch-Waxman Act
  • Specialized expertise in New Chemical Entity cases
  • Patent disputes involving diverse technologies from veterinary products to electronics

With a technical background in chemical engineering, McNair has achieved notable victories in intellectual property cases, including a precedent-setting invalidation of a pharmaceutical compound patent using a lead compound theory, affirmed by the Federal Circuit.

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Winston & Strawn is located at 35 W Wacker Dr, Chicago, IL 60601, United States, but you can meet them at events. You’ll find the complete list below.

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    September 18, 2025 5:41 pm
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