Can a partial assignee or licensee inspect a patent application?

Yes, according to MPEP 106.01, an assignee of a part interest or a licensee of exclusive right is entitled to inspect the patent application. The MPEP states: ‘an assignee of a part interest or a licensee of exclusive right is entitled to inspect the application.’

This right to inspection is distinct from the right to intervene in or prosecute the application, which is reserved for the assignee of the entire interest.