On Thu, Jul 05, 2018 at 01:15:15AM +0000, Tsunakawa, Takayuki wrote: > From: Craig Ringer [mailto:cr...@2ndquadrant.com] > > I'm assuming you don't want to offer a grant that lets anyone use > > them for anything. But if you have a really broad grant to > > PostgreSQL, all someone would have to do to inherit the grant is > > re-use some part of PostgreSQL. > > Your assumption is right. No scope is the same as no patent; it > won't help to defend PostgreSQL community against rival > companies/communities of other DBMSs. Or, I think we can set the > scope to what OIN states. Fortunately, anyone can join OIN free of > charge. > > > > I guess there's a middle ground somewhere that protects > > substantial derivatives and extracts but stops you using some Pg > > code snippets as a freebie license. > > Are you assuming that developers want to use PG code snippets for > non-PostgreSQL or even non-DBMS software?
Our license very specifically permits all types of derivative software. > I believe that accepting patented code from companies would be > practically more useful for PostgreSQL enhancement and growth. > PostgreSQL is now a mature software, and it can be more > corporate-friendly like other software under Apache License. The Apache license is "friendly" to the patent holder, not so much to the aspiring maker of derivative proprietary software. We went with a very liberal license from the outset for what we believed were good reasons, and that's served us well over the decades. If you're proposing a change of this magnitude, it's going to have to be a lot more convincing than, "it would be convenient for my company this year." Best, David. -- David Fetter <david(at)fetter(dot)org> http://fetter.org/ Phone: +1 415 235 3778 Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate