We got the veteran comic Monday at LAX, where he told us Steve hasn’t said a word to his face about stealing his jokes back in the day, but Mark made it clear he's not sweatin' it.

He says Steve can have his old material, because his pen stays producing new material all the time!

Katt roasted Steve on Shannon Sharpe's “Club Shay Shay” for not only swiping Mark’s stand-up bits but also repurposing the premise of his “Hangin With Mr. Cooper” sitcom for his own “Steve Harvey Show” years later.

Mark’s currently delivering new routines on Katt’s “Dark Matter Tour” and tells us it’s perfectly fine if Steve wants to keep the old jokes he stole … he’s confident they’re still being used.

MC credits Katt for being more than an outstanding tour partner — he says Katt got in between him when he went to confront Steve in person.

We recently spoke to Torrei Hart, who’s also on the tour with Katt ... and she sang similar praises about him always taking care of his people.

As fate would have it, Gary Owen also spoke out about his experience dealing with Steve and his producers, saying it didn't go well -- professionally or financially -- when he appeared on Steve's self-titled talk show.