[Code of Federal Regulations] [Title 21, Volume 5] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR316.2] [Page 174] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF PART 316_ORPHAN DRUGS--Table of Contents Subpart A_General Provisions Sec. 316.2 Purpose. The purpose of this part is to establish standards and procedures for determining eligibility for the benefits provided for in section 2 of the Orphan Drug Act, including written recommendations for investigations of orphan drugs, a 7-year period of exclusive marketing, and treatment use of investigational orphan drugs. This part is also intended to satisfy Congress' requirements that FDA promulgate procedures for the implementation of sections 525(a) and 526(a) of the act.