Pennsylvania statutes have language that might have been interpreted to require transfers of interests in land (through deeds or mortgages) to be recorded to be valid. If true, that would have undermined the MERS system of mortgage registration. But the Third Circuit gave MERS a win and interpreted Pennsylvania law to recognize mortgage transfers at the moment they are signed; recording is not required for the transfer of the property interest to be valid but is simply for the convenience of the parties and subsequent conveyees. The case,...