(USDA licensed rights in patents of three grapevines that produce table grapes; patents issued under the Plant Variety Protection Act to CA Table Grape Commission; licenses gave Commission right to sublicense patents and retain 60% royalties from sublicensing efforts; plaintiff grape growers purchased grapevines covered by patents, signed licenses and paid fee; plaintiffs brought action challenging validity and enforceability of patents and inequitable conduct of USDA and Commission; federal court held district court correctly held USDA was a necessary party to plaintiff's declaratory judgment claim based on Patent Act; Section 702 of Administrative Procedure Act waives sovereign immunity for non-monetary claims against federal agencies and waiver broad enough to allow plaintiffs' to pursue equitable relief against USDA on patent claims; court upheld district court ruling dismissing antitrust claims and ruling allowing plaintiffs to pursue inequitable conduct claim).