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"Patents play an important role in the chemical enterprise, both as a means for protecting the fruits of research and development from unauthorized use by competitors and as a major component of the chemical literature." -- What Every Chemist Should Know About Patents, American Chemical Society, 2019.
The Orange Book identifies drug products approved on the basis of safety and effectiveness by the Food and Drug Administration (FDA) under the Federal Food, Drug, and Cosmetic Act. It also offers related patent and exclusivity information.
PubChem offers information on molecules such as nucleotides, carbohydrates, lipids, peptides, and chemically-modified macromolecules. Chemical structures, identifiers, chemical and physical properties, biological activities, and patents are also included.
PatentScope contains over 95 million international patents. Access to PatentScope requires setting up a free account. The site offers chemical structure searching that recognizes the names of chemical compounds in patent texts and their structure from embedded drawings in patent texts. The chemical search applies to the title, abstract, claim and description fields.
Chemical structures of plants in medicinal herbs spur drug discovery. Health innovators utilize medicinal plant patents as case studies for research in medicine and health science. Biologists may refer to plant patents for both aesthetic and practical features of a plant, e.g. slug resistance, deer resistance. Researchers can conduct independent tests on these features and associated genetic markers.
SureChEMBL is a "big data," chemically annotated, international patent database. It contains compounds extracted from the full text, images, and attachments of patent documents. The site offers access to drug discovery, medicinal chemistry, and other commercial aspects of chemical science. The database contains over 17 million compounds extracted from 14 million patent documents.
See Patent Searching section of this site for CPC patent classifications to locate clusters of like chemical patents. Most chemical patents fall under CPC Section C: chemistry and metallurgy. However, some uses of chemicals are found in Section A, human necessities, while chemical processes and nanotechnology are found in Section B. Semiconductors are located in Section H, and green chemistry patents are under Section Y.