Over 100 Years of Banner Witcoff

Banner Witcoff is proud of our rich history that spans over 100 years, but more importantly, we are proud of our client relationships. More than anything, we value the trust we have earned from our clients by protecting their business assets for a century. Read the full article here.



The firm is founded in Des Moines, Iowa.

Firm attorneys take their first patent infringement lawsuit to a successful trial.


Chicago office opens.


The firm’s attorneys prove that inventions can be both patented and copyrighted in the case of Mazer v. Stein before the United States Supreme Court.


Washington, D.C., office opens.


In an unprecedented nine-month long trial, attorneys of the firm prove John Atanasoff is the inventor of the first electronic computer, the ENIAC, changing the course of the history of invention.


Don Banner is sworn in as Commissioner of the United States Patent and Trademark Office.


Attorneys of the firm establish that life forms are patentable in the Diamond v. Chakrabarty case in the United States Supreme Court.


Boston office opens.


Attorneys of the firm help Amgen secure its intellectual property rights in Amgen Inc. v. Chugai Pharmaceuticals, et al., a landmark decision involving biotech patents.


Don Banner and Joe Potenza help establish the first Inn of Court dedicated to IP law, the Giles S. Rich American Inn of Court.


Our Washington, D.C., office, known as Banner, Birch, McKie & Beckett, merges with the Chicago law firm of Allegretti & Witcoff, to form Banner & Allegretti.


The firm adopts the name
Banner & Witcoff.

Portland office opens.

Firm lawyers establish the first-ever patent trial practice class for the National Institute for Trial Advocacy.


The firm’s attorneys help client Nike obtain U.S. Design Patent No. 400,000 for the iconic Air Jordan athletic shoe design.


Banner Witcoff earns distinction of being "IP America's Dream Team" by The American Lawyer.


The National Inventors Hall of Fame awards Donald W. Banner with a Lifetime Achievement award.


The firm announces the inaugural recipients of the Donald W. Banner Diversity Scholarship.


The U.S. Supreme Court rules in favor of firm’s longtime client, NIKE, in Already, LLC, DBA Yums v. NIKE, Inc., preventing a challenge over the trademark registration of NIKE’s Air Force 1 sneaker trade dress.


Banner Witcoff earns distinction of being among the “Top Patent Firms” in the country, based on the total number of U.S. utility patents issued.


Banner Witcoff becomes the first law firm to exceed 1,000 U.S. design patent grants in a single year

Banner Witcoff is recognized for filing more inter partes review petitions than any other law firm in the first half of a single year for longtime client Comcast Corp.


Firm wins “Impact Case of the Year” award for its work representing Converse in its trademark battle over the iconic Chuck Taylor All Star sneakers.

Banner Witcoff is ranked No. 5 on Vault’s 2020 list of Best Intellectual Property Boutique Law Firms.

For the 16th consecutive year, Banner Witcoff obtains more U.S. design patents than any other law firm in the country.

The firm is ranked one of the best performing and most active law firms in inter partes review.

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