Since about March 2009, most if not all, IETF Last Calls have included the text "The following IPR Declarations may be related to this I-D:" I assume that this is telling us that there are no IPR Declarations relating to this I-D and that if there were, then they would be listed. My question is, is this a change of practice? I have a folk memory that there has always been a requirement for IETF Last Calls to disclose IPR claims but cannot find anything to support this; eg RFC3979 only requires a statement in the published RFC. Tom Petch _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf