In the nine-page lawsuit, Leonard claims the logo is an extension of drawings he started making early in his college career and he gave Nike permission to use the logo "on certain merchandise" when he had an endorsement deal with Nike.
A few years later he allowed Nike to use their logo as part of a promotional contract, but only on individual items.
However, the official filing to the court also noted that Nike did in fact recognize Leonard's exclusivity to the logo, but the company had filed an application with the U.S. Copyright Office without informing Leonard.More news: Amitabh Bachchan's Twitter hacked: Pak PM's profile picture, 'Love Pakistan' in bio
Leonard was a Nike endorser until 2018 but now endorses New Balance.
According to ESPN's Tim Bontemps, the lawsuit states that Leonard designed the logo just after being drafted. Leonard said Nike "falsely represented in the application that Nike had authored the logo".
The company then copyrighted the logo without Leonard's consent in May 2017, the lawsuit claims.More news: Ubisoft launches its own PC subscription service, UPlay+
It was filed in California because Leonard maintains a home in San Diego, the suit said.
"Leonard is known for his extremely large hands", the lawsuit reads.
The Warriors host the Raptors Wednesday evening at 9pm ET with the series tied at 1-1.More news: Trump still hangs tariff threat over Mexico despite deal