CAS Patents

Our patent collection is augmented with English titles and abstracts and detailed indexing by CAS scientists, making complex aspects of patent documents, including chemical substances, sequences, Markush structures, assignees, and classification codes, searchable and accessible.

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Patents published by 109 issuing authorities covering more than 40,000 unique IPC codes in areas including chemistry, pharmaceuticals, consumer goods, processes, materials, engineering, agriculture, and more.

English language titles and abstracts for patents published in 50 languages translated and enhanced by CAS scientists.

Key invention details including substances, reactions, Markush representations, and more indexed by scientists and connected to other relevant data within the CAS Content Collection™.

Consolidated patent family summaries and convenient connections to global full-text patent documents.

Claims text, legal status information, cited references, and examiner citations included for select authorities.

Updated daily, with patent applications from nine major patent issuing authorities available within two days of publication.

Latest from CAS Insights™

Materials

Advanced materials: innovations making the leap from the lab

MOFs, perovskites, conductive polymers, and AI are reshaping energy storage, sensors, and more. Here's what's moving from proof-of-concept to market.
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Digital R&D

How data integrity powers AI for patent searching

AI tools are vital to patent searching, but they must have access to structured, indexed data to return reliable, comprehensive results.
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Emerging Science

Capacitors, catalysts and coatings: MXenes drive industrial innovations

2D materials like graphene and carbon nanotubes are revolutionizing materials science, and now MXenes are introducing even greater adaptability and high-performance properties. Find out why MXenes are versatile industrial materials.
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