U.S. Supreme Court Certiorari granted in RiseandShine v. PepsiCo, No. 24-1016 (June 29, 2026): Prof. Reichert's new essay asks who actually decides trademark confusion
Thomas Reichert

Thomas Reichert

Intellectual Property Attorney

Reichert Legal Services

Assistant Professor of Law

Southern Illinois University Simmons School of Law

My academic work and legal practice inform each other. At SIU, I teach core law school courses and advanced courses in business and intellectual property law, and I conduct empirical research on trademark doctrine. Through Reichert Legal Services, I advise law firms on difficult IP matters for clients ranging from startups to Fortune 5 companies.

Practitioner

Through Reichert Legal Services, I serve as an "attorney's attorney" for sophisticated IP questions. I've counseled Fortune 5 companies, innovative startups, and international clients across an extraordinary range of technologies and industries.

  • Startups to Fortune 5 companies
  • U.S. and international portfolios
  • Patent prosecution & trademark strategy
  • Attorney training & mentorship
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Scholar

My research applies computational methods to longstanding doctrinal questions in intellectual property law. My current project demonstrates that the traditional thirteen-factor DuPont test effectively collapses to just two factors, a finding with significant implications for trademark practice.

  • Empirical legal studies
  • Trademark doctrine
  • Computational legal analysis
  • Multifactor test theory
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What They're Saying

This paper could be very useful... Empirical support for John Welch's mantra, which turns out to be understated: mark and goods don't predict 95% of the outcomes of 2(d) appeals to the TTAB, they predict 99%!

Rebecca Tushnet, Frank Stanton Professor of the First Amendment, Harvard Law School

The 13-factor DuPont analysis to determine likelihood of confusion is not as complex as it appears when practicing before the Trademark Trial and Appeal Board... Just two of the factors can be used to predict whether the board finds challenged marks confusing 99.57 percent of the time.

MLex, Global Regulatory Intelligence

Startups to Fortune 5
3 Graduate Degrees
USPTO Patent Attorney
Global IP Portfolios