Steve Dimopoulos, a personal injury attorney in Las Vegas, filed a federal lawsuit against the NFL and Las Vegas Raiders after they allegedly threatened «heavier legal penalties» because of their Super Bowl LVII ad.

Dimopoulos aired a commercial on the Las Vegas media market and on YouTube promoting his law firm, Dimopoulos Injury Law, which featured Raiders defensive end Maxx Crosby, Vegas Golden Knights forward Williams Karlsson, and UFC fighter Jon Jones.

The ad showed each athlete training and Dimopoulos getting ready to hit the court.

The NFL and the Raiders sent a joint cease and desist letter to Dimopoulos on February 22, demanding that he stop airing the commercial or face legal penalties for trademark infringement. He was given a March 1 deadline to respond, and he did so with his federal lawsuit.

CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COM

Las Vegas Raiders’ Maxx Crosby (98) reacts during a game against the New England Patriots at Allegiant Stadium on December 18, 2022 in Las Vegas. (Michael Owens/Getty Images)

Dimopoulos told Fox News Digital that there is no trademark infringement in his commercial.

«I’ve been wearing silver and black before the Raiders announced they were moving to the city years ago,» Dimopolous said, referring to Crosby donning a black and silver jersey and helmet during the commercial. Dimopolous says that he has been wearing those colors since 2012.

OJ SIMPSON NOTES ON ALEX MURDAUGH TRIAL: ‘I DON’T KNOW WHY THEY THINK I’M AN EXPERT ON IT’

«[The Raiders] They come to town, and they have the same color scheme. And they’re taking this position that I can’t use my own colors in this Super Bowl ad that I just put out because it’s trademark infringement,» the attorney said.

«We were very careful not to use any Raiders logos. The only logos that appear in the commercial are the logos of my law firm. Some people say it looks a bit like Raiders branding. It really doesn’t. To the extent that he does, it’s the same analysis: He was wearing that same logo here in Las Vegas long before they came here.»

The Las Vegas Raiders logo at the Super Bowl Experience on February 8, 2022 at the Los Angeles Convention Center in Los Angeles.

The Las Vegas Raiders logo at the Super Bowl Experience on February 8, 2022 at the Los Angeles Convention Center in Los Angeles. (Ric Tapia/Icon Sportswire via Getty Images)

Dimopoulos’ reasoning behind the lawsuit is not just to defend his Super Bowl ad.

«I knew enough that this is a bit ridiculous, I did some research and quickly realized that the NFL has a reputation for being a bit abusive and overreaching in its intellectual property rights,» he explained. «Sue small businesses, attack people in small businesses who don’t have the knowledge or resources to fight back. That was part of my motive. I just want to defend these people.»

JALEN CARTER RETURNS TO NFL COMBINE HOURS AFTER ARREST RELATED TO LINK IN FATAL CRASH

A Los Vegas Raiders helmet during a preseason game against the Miami Dolphins at Hard Rock Stadium on August 20, 2022 in Miami Gardens, Florida.

A Los Vegas Raiders helmet during a preseason game against the Miami Dolphins at Hard Rock Stadium on August 20, 2022 in Miami Gardens, Florida. (Kevin Sabitus/Getty Images)

«The NFL has been a signature bully for far too long,» Dimopoulous’s attorney, Marc Randazza, said in a statement. «Everyone caves when threatened… All Dimopoulos wants in this case is to be left alone. The NFL does not own the colors silver and black, and my client has the right to continue wearing his color scheme «.

As for Crosby’s involvement in the commercial, Dimopolous said the two-time Pro Bowler «signed up to the fact that this agreement was not in conflict with or in violation of any agreement with any third party.»

CLICK HERE TO GET THE FOX NEWS APP

The NFL and the Raiders did not immediately respond to a request for comment.