Biography

A member of the firm’s Intellectual Property Litigation practice, Zach Howenstine has more than a decade of experience focusing on complex, high-stakes intellectual property matters in federal and state trial and appellate courts across the country. His practice encompasses many areas of intellectual property litigation including infringement of copyrights, patents, and trademarks; misappropriation of trade secrets; antitrust issues; and contract matters with IP elements. Zach also advises clients on IP policies and best practices, including Digital Millennium Copyright Act (DMCA) compliance issues.

Zach has litigated cases in federal and state courts around the country, including top IP venues, and has represented clients in federal jury trials in the Northern District of California and Eastern District of Texas, appeals to the U.S. Court of Appeals for the Federal Circuit and Eighth Circuit, and binding arbitrations.

*Admission to practice law in New York is pending.

Education

  • University of Missouri School of Law  (J.D., 2009)
    • Order of the Coif
  • Macalester College  (B.A., cum laude, 2002)
    • German Studies

Admissions

  • Missouri
  • U.S. Court of Appeals, Federal Circuit
  • U.S. Court of Appeals, First Circuit
  • U.S. Court of Appeals, Fifth Circuit
  • U.S. Court of Appeals, Eighth Circuit
  • U.S. District Court, Eastern District of Missouri

Background

Prior to joining the firm, Zach was a law clerk for U.S. District Judge E. Richard Webber.

Highlights

Thought Leadership

Standards of Review Take Center Stage in Trademark Case Accepted by SCOTUS

Kyle Gottuso and Blake Chrismer
News Item

Donna Schmitt, Armstrong Teasdale Recognized in 2026 Copyright 1000

Donna Schmitt
Thought Leadership

Supreme Court Upholds SEC’s Disgorgement Power But Leaves Some Questions Unanswered

Advisory
Experience

Formation of Equity Joint Venture for $1 Billion Insurance Consortium

Represented a non-controlling owner in the formation of an equity joint venture that served as a managing general underwriter for a consortium of insurance companies with more than $1 billion in annual revenues, and...

News Item

Armstrong Teasdale Expands Corporate Practice in Chicago with Partner Tracy Jacobson and Counsel Jason Faust

National law firm Armstrong Teasdale is continuing to grow its Corporate Services Group’s Chicago presence with the addition of Partner Tracy Jacobson and Counsel Jason Faust. Jacobson comes to Armstrong with 20 years of...

Thought Leadership

White House Executive Order on Advanced AI Innovation and Security: Implications for the Technology and Defense Sectors

Advisory
Thought Leadership

Colorado A-Companies: Options for Artists and Investors Nationwide

Advisory
News Item

Missouri Lawyers Weekly Names Ty Ketchum to 2026 Employment Law Power List

Tyson Ketchum
Thought Leadership

What To Expect From Colorado's New Artist Co. Structure

Colorado recently enacted the Colorado Artist Company Act, a first-of-its-kind statute creating artist companies, or A-Corps — a variant of a Colorado limited liability company with certain artist-friendly default provisions. The act became effective...

News Item

Maureen Bryan Recognized as Illinois Legal Leader

Maureen Bryan
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