U.S. federal trademark · Serial No. 77844453 · Reg. No. 4150545
Providing,an online searchable computer database about scholarly works, to which access is gained through a link embedded in a document, that allows publishers, libraries, researchers and others to ascertain and verify that the document in which the link is embedded is a copy of that document that is maintained by the original publisher of the scholarly work or by a legitimate successor to or licensee of the original publisher
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.