Inside A Russian Adidas AG Sports Store
An Adidas Springblade running shoe sits on display inside an Adidas AG sportswear store in Moscow. Photo by Bloomberg

Adidas Is Suing Skechers Again Over Shoe Designs

Jul 11, 2016

Adidas has filed a patent infringement lawsuit against Skechers. The German sportswear maker says the smaller rival has been selling shoes that feature technology found in its Springblade line of footwear.

The lawsuit, filed in an Oregon District Court, claims that Skechers (skx) violated Adidas patents by selling several shoes under the Mega Flex and Mega Blade lines that purportedly "copied Springblade technology." The Springblade first debuted in 2013 and featured 16 forward angled, highly elastic blades on the bottom of each shoe. Adidas said it invested heavily in the technology, one of two notable innovations it debuted around that time. (The other is its popular Boost line.)

The Skechers Mega Flex: Mega Blade 3.0 shoe, above, is targeted in the Adidas lawsuit.  Courtesy of sketchers.com 

"We will not stand by and allow others to blatantly copy our products and infringe on our valuable intellectual property," Adidas said in a statement. "These shameless imitations tarnish the reputation of our brand."

A Skechers representative didn't respond to a request to comment on the litigation.

It isn't the first time Adidas and Skechers have found themselves in a legal tussle over shoe design. In the fall of 2015, Adidas sued over a sneaker it claimed was a lookalike version of its Stan Smith shoe. A court earlier this year granted Adidas a preliminary injunction in that case that prevented Skechers from selling two styles that had at that time been discontinued, as well as from using the word "Supernova" in a third style. Skechers at the time downplayed the complaint's significance, saying the styles weren't at all important to the brand's commercial operations. It also indicated it would appeal the ruling.

In the more recent case, Adidas is seeking a preliminary injunction, as well as compensation for the alleged infringement.

All products and services featured are based solely on editorial selection. FORTUNE may receive compensation for some links to products and services on this website.

Quotes delayed at least 15 minutes. Market data provided by Interactive Data. ETF and Mutual Fund data provided by Morningstar, Inc. Dow Jones Terms & Conditions: http://www.djindexes.com/mdsidx/html/tandc/indexestandcs.html. S&P Index data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Terms & Conditions. Powered and implemented by Interactive Data Managed Solutions