John R. McNair - Winston & Strawn LLP - Chicago, IL office in Chicago, Illinois
John R. McNair - Winston & Strawn LLP - Chicago, IL

John R. McNair - Winston & Strawn LLP - Chicago, IL

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300 N La Salle Dr Suite 4400, Suite 4400, Chicago, Illinois, United States
173 Years of Practicing, since 1853
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+1 312-558-3225

John R. McNair: High-Stakes Patent Litigation

Scientific Precision in Law

John (J.R.) McNair is a highly specialized attorney serving as Of Counsel at Winston & Strawn LLP in Chicago, Illinois. With a background in chemical engineering, J.R. McNair bridges the gap between complex technology and legal advocacy. His practice is focused exclusively on Patent Litigation, where he represents clients in the pharmaceutical, chemical, and biotechnology sectors. He possesses deep expertise in cases arising under the Hatch-Waxman Act, particularly those involving New Chemical Entities. This niche specialization makes him a critical asset for pharmaceutical companies defending their intellectual property rights against generic challenges.

Comprehensive IP Advocacy

Beyond pharmaceuticals, John McNair handles patent disputes across a broad range of technologies, including electronics and computer software. He guides clients through every stage of the litigation process, from pre-suit analysis to trial and appeal. His experience extends to the U.S. Patent and Trademark Office, where he has handled inter partes reviews and other post-grant proceedings. J.R. is also deeply committed to Pro Bono work, volunteering to assist individuals with criminal record expungement and working with The Innocence Project to help exonerate the wrongfully convicted.

  • Pharmaceutical Patent Litigation (Hatch-Waxman)
  • Chemical and Biotechnology IP Defense
  • Electronics and Software Patents
  • Post-Grant Proceedings (USPTO)
  • Pro Bono Criminal Record Expungement

Global Firm Resources

Practicing at Winston & Strawn, one of Chicago's oldest and most prestigious law firms, J.R. McNair has access to global resources and a team of top-tier litigators. This allows him to handle matters of any scale or complexity. Whether you represent a major drug manufacturer facing a patent cliff or a tech company protecting a key innovation, John R. McNair offers the technical fluency and legal firepower needed to succeed. His office is located in the striking 300 North LaSalle building, overlooking the Chicago River 🧬⚖️💊.


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Location & Access

Primary Address

Located on the north bank of the Chicago River in downtown Chicago's trendy and bustling River North neighborhood.

Building Location

This towering 60-story Class A skyscraper, known as 300 North LaSalle, features an elegant glass curtain wall. It is situated steps away from the Chicago River and is within walking distance of landmarks like Chicago Cut Steakhouse and the Kinzie Chophouse.

Parking Details

Paid public parking is available on-site within the building's own three-level underground parking garage. Additionally, several public multi-storey and surface parking lots are located nearby.

Public Transit

Served by Chicago Transit Authority Route Brown Line (Loop); nearest stop is at Merchandise Mart.

Accessibility / Suite Access

Enter through the grand main entrance on North LaSalle Street. Register with the security reception desk in the 60-story tower's lobby, and take the high-speed elevators up to the 44th floor to locate Suite 4400.

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