Not even with a very long bargepole
" I don't think the IEEE have a good claim to it, but the IETF does. "
Rubbish. In fact claptrap. Firstly, the IETF wouldn't touch this with a bargepole. Secondly, the conflict of interest would be blatant and massive, since the IETF is funded by... guess what... PIR's revenue stream. So (unlike the PIR sale, which is a very straightforward and transparent deal, whatever the snowflakes are claiming) this would be way outside any version of fair dealing.