Senniger Powers History

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1919

Delos G. Haynes establishes office in St. Louis for the practice of patent, trademark and copyright law

1920s

Haynes joins Lloyd R. Koenig to practice as Haynes and Koenig

1929

Firm moves from Syndicate Trust Building to Paul Brown Building at Ninth Street and Olive Street

1930s

John D. Pope III joins the firm

1940s

Firm renames itself Koenig and Pope

1945

Stuart Senniger joins the firm

1946

Irving Powers joins the firm

1952

Don Leavitt joins the firm

1968

Firm moves to Railway Exchange Building

1969

John Roedel joins the firm

1950s-60s

Name changes from Koenig and Pope, to Koenig, Pope, Senniger and Powers, to Koenig, Senniger, Powers and Leavitt, then to Senniger, Powers, Leavitt and Roedel

1991

Firm moves to Metropolitan Square Building

2006

Firm renames itself Senniger Powers LLP

2008

Senniger Powers moves to the Bank of America Tower in downtown St. Louis

2009

Firm celebrates its 90th anniversary

Recent IP Headlines

05/03/2018

Chambers USA Recognizes Senniger Powers, Three Partners

Once again, Chambers USA has recognized Senniger Powers for its high-quality professionals and expertise in the intellectual property field.

05/01/2018

Supreme Court:  IPR Patent Challenges Survive, with Modification

On April 24, 2018, the Supreme Court decided two cases involving patent law: Oil States Energy Services, LLC v. Greene’s Energy Group, LLC and SAS Institute Inc. v. Iancu. 

01/09/2018

Federal Circuit Rules Ban on Scandalous and Immoral Trademarks Unconstitutional

On December 15, 2017, the Federal Circuit held that the Lanham Act’s ban on registering scandalous or immoral marks is an unconstitutional restriction of free speech.

01/01/2018

Tietz Named as New Partner

Senniger Powers is pleased to announce that Paul D. Tietz has been elected to the partnership effective January 2018.

12/29/2017

Supreme Court: Patent Owner's Authorized Sale of Patented Product Exhausts Patent Rights

On May 30, 2017, the Supreme Court in a 7 to 1 decision in Impression Products, Inc. v. Lexmark International, Inc. held a patentee's decision to sell a patented product exhausts all of the patent rights in the product.

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