It is unlawful to display the registered trademark sign if the descriptor is used on something that is not in fact registered. A search on the USPTO websites July 5, 2017 shows no registered mark for AnnuityMLS and no pending application, declined application, abandoned application or otherwise for AnnuityMLS. According to Trademarkia, AnnuityMLS is not registered in Canada, Australia, China, India or the EU. So what gives?

Carmichael CA trademark infringement Attorney Dan Ballard gives a nice analysis in his comments on Avvo regarding use of  registered trademark sumbol or "racol":