501 Assignment of Marks 501.01 Assignability of Marks in Applications and Registrations 501.01(a) Assignability of Intent-to-Use Applications 501.01(b) Assignability of Extensions of Protection of International Registrations to the United States 501.02 Assignments Must Be in Writing 501.03 Effect of Failure to Record Assignment 501.04 Foreign Assignee May Designate Domestic Representative 501.05 Assignee Stands in Place of Applicant or Registrant 501.06 Partial Assignments 501.07 Assignment of Extension of Protection of International Registration to the United States 503.03 Requirements for Recording