PIDs for Patents

Is there a PID for patents (standardised format for patent numbers, copyright licenses). If not, is it something worth considering ?

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Hi Melroy,

At Crossref we’ve done a bit of work with Cambia/The Lens in the past: We haven’t got as far as PIDs for patents although I do know that there has been interest in this from some of our members (IEEE, ACM etc.)

We also get a feed of citations to patents in Event Data from The Lens (, although I don’t think we’ve had an updated feed of data from The Lens in some time.

Sorry nothing more concrete at this point but there is interest!

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