There are several companies which operate trademark ‘registries’ or ‘directories.’ They scour various government trademark publications and then send invoices to the applicants. These so-called directories tend to be located in exotic locations like Vaduz, Liechtenstein. A recent offering uses an acronym which is similar but not identical to CPA, the reputable trademark and patent renewal firm, which operates out of Jersey (the European Jersey).
I will not use terms such as ‘fraud,’ ‘scam’ or ‘rip-off’ to describe these solicitations as I will not opine on the legality of these solicitations, however imho, these directories ARE OF NO VALUE WHATSOEVER. If you have filed a trademark application, and you are represented by an attorney (who is the proper agent for correspondence), then do not be fooled by invoices that are sent directly to you.