As a customer, I'm anti- anti-competitiveness. I understand and support the purpose of the patent system--it is designed to promote innovation, and give innovators a window of opportunity to benefit from their ideas and development before everybody and their brother can copy their work.
But patents can also be abused to hamstring legitimate competition and stifle true innovation. I hope that's not what Garmin is doing here.
I don't know if Garmin's suit has merit or not--hopefully, the courts will figure that out correctly. But the optics are poor: Garmin is an 800-lb gorilla, and uAvionix is the little guy, and the case for infringement is not obvious to the layman.
As a customer, my interests are to see the best competition in the marketplace, so I am generally in favor of anyone who wants to go up against the 800-lb gorilla.