Yes, I think this guy Myhrvold (who got rich managing some smart scientists at MS) owns a patent trolling business and slapped a patent on it, so nobody else can make and sell a mosquito laser cannon. The devil incarnate, apparently.
The true problem is that back when it was first invented, it wasn't practical. They are still improving it and trying to get it field tested.
Still though, lasers take a fair bit of power, and there is a distinct lack of power in places where mosquitoes are the thickest.
Also people get a bit touchy about "AI controlled lasers" in populated areas, even if the laser is low power.
The fact that they are still trying to improve it despite the lack of a huge economic incentive is a good thing IMHO.
https://www.uspto.gov/patents-getting-started/general-inform...
The key word is not and, but or. “the right to exclude others from making, using, offering for sale, or selling”