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Re:Tongan Shell Game: How Apple and Google File Trademarks i... by hkmurakami on Tuesday September 29, 2015 @06:58PM (#10300424)
> "secret patent" is theoretically a contradiction

There are "submarine patent" strategies though, which seek to postpone revelation of a patent for as long as possible.

Re:Tongan Shell Game: How Apple and Google File Trademarks i... by monochromatic on Tuesday September 29, 2015 @10:23PM (#10301346)
Less of a problem these days though, since patent term is now measured from priority date (whereas it used to be measured from issue date).