This article focuses primarily on recent changes to irreparable harm standards, how those changes have altered the patent litigation landscape. A patentbased injunction prohibits an infringer from stepping on the rights of the patent owner.Superior Court, 44 Cal. IVAC's San Diego, CA office, and all sales were filled. Table of Contents. Foreword. Preface. Acknowledgments. A patent agreement is also known as a license agreement. It includes information about what rights are given to the parties involved in the transaction. A patent is a government-granted monopoly for an invention and can be highly lucrative. Table of Contents. Foreword. Preface. Acknowledgments. 331 prior to December 31, 2007 will not encumber the use of Patent No. 431.