(a) (1) In the course of examining or treating a matter in a pending or abandoned application, in a patent, or in a reexamination proceeding, including a reexamination proceeding ordered as a result of a supplemental examination proceeding, the examiner or other Office employee may require the submission, from individuals identified under § 1.56(c) , or any assignee, of such information as may be reasonably necessary to properly examine or treat the matter, for example: (i)Commercial databases: The