Nike Accuses Skechers, New Balance of Copying its Flyknit Tech in New Lawsuits

Nike is coming after more brands for allegedly copying its proprietary footwear technology.

In two separate complaints filed Monday, Nike accused New Balance and Skechers of infringing on its patented Flyknit technology in several of their shoe models. In the complaint filed against Skechers in California, Nike said that Skechers’ Slip-ins, Go Walk and Ultra Flex shoe lines infringe on its Flyknit technology. In its suit filed against New Balance in Massachusetts federal court, Nike said New Balance’s Fresh Foam, FuelCell and other sneaker lines infringe on its patents.

Skechers declined to comment. Nike and New Balance did not return FN’s request for a comment.

“Due to the success of Nike’s Flyknit, many of Nike’s competitors have copied and made unauthorized use of Nike’s Flyknit technologies,” Nike alleged in both complaints.

According to Nike’s website, Flyknit technology “uses high-strength fibers to create lightweight uppers with targeted areas of support, stretch and breathability.” The fabric, made from lightweight, woven yarn strands, is meant to fit like a sock but offer durability and support.

These lawsuits mark the Swoosh’s latest legal action when it comes to Flyknit. January, Nike sued Lululemon and claimed that some of the athleisure brand’s new sneakers infringe on its patents related to the technology. Nike has also previously sued Puma and Adidas for infringing on Flyknit patents.

In November of 2021, Nike and Skechers settled three lawsuits in the Central District of California in a long-running battle over intellectual property. The dispute began in January 2016, when Nike sued Skechers and claimed that several of its sneakers — including the Skechers’ Burst, Women’s Flex Appeal, Men’s Flex Advantage, Girl’s Skech Appeal, and Boy’s Flex Advantage shoes — contained design elements that infringed on multiple Nike-owned patents.