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Cooper & Dunham LLP is a premier intellectual property law firm that has been providing sound legal advice to its clients since 1887.  We work closely with clients of all sizes, from startups to Fortune 500 companies, to provide sound counsel in all aspects of intellectual property law, including patents, trademarks, copyrights, unfair competition, trade secrets, false advertising, computer software/internet protection, and IP transactions.  Given our size, deep experience, and technical and legal acumen, we are well positioned to provide efficient and high-quality legal services.

In 1887, the founders of Cooper & Dunham LLP opened their offices in New York, dedicated to the practice of all aspects of intellectual property law, including patent, trademark, copyright, trade secrets, and false advertising. Today, as the firm celebrates over 130 years of practicing IP, Cooper & Dunham LLP remains committed to its specialization in IP and prides itself in providing quality legal services in all areas of intellectual property.  The firm remains dedicated to professional excellence and personal service, and continues to be a leader in the field of IP.


The firm closely partners with its clients to counsel them on all aspects of IP law.  The firm routinely assists its clients in the preparation and prosecution of patents, trademarks and copyrights, IP litigation in federal courts, administrative proceedings at the U.S. Patent and Trademark Office, IP-related due diligence in connection with corporate transactions, and preparing and negotiating technology licensing and development agreements.  The firm's practice areas include expertise in biotechnology and pharmaceuticals, electronics, computer hardware, software, genetics, semiconductors, consumer products, medical devices, and information technology, trademarks, trade dress, false advertising, celebrity endorsements, trade secrets, and copyrights.  The firm has an extensive litigation practice in federal courts throughout the country.


Almost all of the firm's professionals have technical training, expertise and degrees in diverse fields including electrical engineering, chemical engineering, biochemistry, chemistry, physics, biology, mechanical engineering, computer systems, and mining and metallurgical engineering.  The firm's professionals also include scientific advisors with graduate degrees in the biotechnology fields.  Nearly all of the firm's professionals are registered to practice before the U.S. Patent and Trademark Office.

From major litigation to day-to-day advice, Cooper & Dunham LLP attorneys stand ready to assist their clients in any intellectual property matters that may arise.

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