My understanding is that it isn't that he's patented revK kilts in general, but all the other unique features of a Utilikilt along with the pleating. I suspect that if Utilikilts was a bigger company, and if they were inclined to do so, they could easily force those of us in the US who are making this style of kilt to fight them in court or close up shop. My guess is that Krash either isn't that sort of businessman or he doesn't know that Alt.Kilts, me, and whoever else exist. Or probably a combination of the two. I've stopped doing revK pleats and really narrow aprons, and still need to replace a few photos on my site, strictly as a CYA measure.

As far as who was first, AFAIK it's Utilikilts. Even if someone else was doing it first, Utilikilts has done such a spectacular job building their brand that it doesn't really matter. I remember when they first started selling kilts and had never heard of anything similar at the time or before.