For what it's worth, it wasn't Magnepan's patent infringement suit that killed Apogee, but financial difficulties. Apparently, the Grand, while superb, was very expensive to make, and they also had trouble with the cost of in-warranty ribbon repairs. If you do a search you can find an account by someone who worked at Apogee at the time.
Best Electrostatic loudspeaker?
Many of us have found that nothing make the magic happen like a pair of Electrostatics. It's been an evolutionary road for me, starting with various dynamic systems, then ribbon/dynamic hybrids, then full range planar magnetics (Maggies), then Electrostatics. So those of you with experience in Electrostatics, which do you think is (are) the best designed and executed example(s) of the breed?