General Information About 35 U.S.C. 161 Plant Patents Patents Guidance, Tools & Manuals General Information About 35 U.S.C. 161 Plant Patents This publication provides a basic and understandable overview of plant patents. It will help prospective plant patent applicants to: Identify what types of plants are patentable under the provisions of 35 U.S.C. 161. Present the legal requirements ...

U.S. PATENT AND TRADEMARK OFFICE Information Products Division U.S. Patent Classification System - Classification Definitions as of June 30, 2000 Patents classified in a subclass may be accessed by either clicking on the subclass number preceding each subclass definition or on the icon, below. ( please note that patents for some subclasses may not be available ) For classification search ...