503.01(c) Recording Is Not a Determination of Validity
The Assignment Recordation Branch does not examine the substance of documents submitted for recording. The act of recording a document is a ministerial act, and not a determination of the document’s validity or of its effect on title to an application or registration. The USPTO will determine the effect of a document only when an assignee attempts to take an action in connection with an application or registration (e.g., when an assignee files a statement of use under 15 U.S.C. §1051(d)(1) or a §8 affidavit). 37 C.F.R. §3.54.