Re: How can we submit code patches that implement our (pending)patents? - Mailing list pgsql-hackers

On Mon, Jul 23, 2018 at 10:13:48AM -0400, Chapman Flack wrote:
> On 07/23/2018 10:01 AM, Bruce Momjian wrote:
> 
> > And the larger question is whether a patent free for use by software
> > under any license can be used in a defensive way.  If not, it means we
> > have no way forward here.
> 
> Isn't 'defensive', in patent-speak, used to mean 'establishing prior
> art usable to challenge future patent claims by others on the same
> technique'?
> 
> Is there any way that conditions of use, or lack of them, on an
> existing patent, would make it unusable in that context?

It doesn't have to be a patent on the same technique;  this URL was
referenced in the thread:

    https://en.wikipedia.org/wiki/Defensive_termination

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +