It’s not over yet, but it’s inching nearer to the end.
According to Games Fray’s Florian Mueller (via VGC), the non-final rejection — meaning Nintendo has two months to respond (or more if it choses) — the USPTO has rejected all 26 claims made in the patent, which essentially revokes it, unless Nintendo chooses to respond.
Good. Nintendo didn’t invent the mechanic, nor Game Freak. Pokemon copied the mechanic. Outside the word Pokemon, and some creature names, very little if anything was truly original.