Sam Hartman <hartmans-ietf@xxxxxxx> writes: >>>>>> "Simon" == Simon Josefsson <simon@xxxxxxxxxxxxx> writes: > > Simon> This document appears to have a normative reference to a > Simon> patent: > > Simon> [LUHN] Luhn, H., "Luhn algorithm", US Patent 2950048, > Simon> August 1960, http://patft.uspto.gov/netacgi/nph- > Simon> Parser?patentnumber=2950048. > > Simon> I cannot find a patent disclosure about this on file with the > Simon> IETF: > > Simon> https://datatracker.ietf.org/ipr/search/?option=document_search&document_search=draft-ietf-keyprov-symmetrickeyformat > > Simon> I believe the authors should file a patent disclosure about > Simon> this in order to comply with the spirit of RFC 3979 section > Simon> 6.1.3. > > Simon, I'm not sure what the letter of that BCP says, but I think the > spirit of the requirements is that we should have disclosures regarding > any IPR that may pose concerns for implementation. > > > As far as I can tell, this is an August 1960 patent. It's old enough > that no license is required. I do not see any concerns this poses. > > Am I missing something. I did not notice the date. More worrisome, I cannot read the reference. The link goes to a page which says 'Full text is not available for this patent. Click on "Images" button above to view full patent' and when I click on "Images" I get nothing because the page appears to require some non-standard plugin that I don't have installed. /Simon _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf