EPA is revising and updating its regulations governing the procedures for the satisfaction of data requirements under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). Specifically, this regulation addresses procedures for the protection of exclusive use and data compensation rights of data submitters, which have not been revised since issuance in 1984. These revisions are now needed to accommodate statutory changes and related changes in practice that have occurred since that time and to make minor changes to clarify the regulations.