Nike has reportedly filed a formal opposition to the USPTO Trial & Appeal Board, saying Rob Gronkowski’s logo, which is his silhouette spiking a football, is too similar to the iconic Air Jordan Jumpman logo.

According to ESPN’s Darren Rovell, Gronk’s company, Gronk Nation L.L.C., filed to trademark the logo for use on clothing and exercise equipment back in April of last year.

Gronkowski, who is a Nike sponsored athlete, and his camp have until August 5th to respond to Nike’s opposition, but if nothing is resolved, the two sides will battle over the Gronk spike logo.

However, Gronk’s attorney seems to think the issue with Nike will be resolved. Per ESPN,

“My client has created one of the most recognizable brands in sports today,” said attorney Troy Carnrite, a partner with Bradley Arant Boult Cummings LLP, which represents the Gronkowski family. “We are very proud of this brand and are optimistic that we will resolve this with Nike amicably.”

Check out the two logos below.

Nike Opposes Rob Gronkowski's New "Spikeman" Logo