I haven't looked into it in great depth. I'm generally sceptical of "market" solutions, so I focus on legislation, courts, and government policies.
The reason I'm sceptical is that all previous "market" solutions have been disappointing, and because its success depends so heavily on adoption. I usually judge solutions by the question: Will it make it safe for developers to support h.264? And the DPL won't.
The DPL might be good, like OIN is, but it's still only a partial solution to a small part of the problem.
"Copyleft for patents" doesn't sound accurate, AFAICT. It seems more like a patent non-aggression pact, or a demilitarised zone.
I've a short en.swpat.org page: Defensive Patent License. The en.swpat.org wiki is a general information resource, so it aims to documents topics like the DPL from all angles, not just my opinion. If you've links or explanations about why DPL is an important step forward, they'd be very welcome.
Copyright © 2017, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds