ESPN reports that the company in question is Solid Oak Sketches, who has a deal worked out with certain NBA players so that they own the copyright on many of their tattoo designs. In this case, they claim that Take-Two has used eight different designs without their permission on Kobe Bryant, LeBron James, DeAndre Jordan, Eric Bledsoe and Kenyon Martin in the 2K series. Examples include a child’s portrait found on LeBron, and butterflies on Kobe.
The way this is supposed to work is that if an athlete appears to promote something, in this case a video game (this is especially significant with LeBron on the cover of NBA 2K14), there’s supposed to be a separate rights deal worked out with Solid Oak to ensure the tattoo designs can be shown with the proper permissions.