the firm's post-grant practitioners are some of the most experienced in the country.


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About Our

Law Firm

About Our Law Firm

Headquartered within steps of the USPTO with an affiliate office in Tokyo, Oblon is one of the largest law firms in the United States focused exclusively on intellectual property law.

Get to know our


Get to know our History

Norman Oblon with Stanley Fisher and Marvin Spivak launched what was to become Oblon, McClelland, Maier & Neustadt, LLP, one of the nation's leading full-service intellectual property law firms.

Our Local and

Global Reach

Our Local and Global Reach

Outside the US, we service companies based in Japan, France, Germany, Italy, Saudi Arabia, and farther corners of the world. Our culturally aware attorneys speak many languages, including Japanese, French, German, Mandarin, Korean, Russian, Arabic, Farsi, Chinese.

A few of our


A few of our ACCOLADES

Oblon's professionals provide industry-leading IP legal services to many of the world's most admired innovators and brands.




From the minute you walk through our doors, you'll become a valuable part of a team that fosters a culture of innovation, client service and collegiality.

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GET In Touch

A few ways to GET In Touch
US Office

Telephone: 703-413-3000
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Tokyo Office

Telephone: +81-3-6212-0550
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Patent Forms

Downloadable Patent Forms

The United States Patent and Trademark Office (USPTO) issued final rules implementing the inventor's oath or declaration provisions of the America Invents Act (AIA) on August 14, 2012.

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Oblon Announces Election of Two New Partners and One New Senior Attorney

  • January 5, 2015
  • Firm News

For Immediate Release

January 5, 2015

Alexandria, VA – Oblon, McClelland, Maier & Neustadt, LLP, is pleased to announce the election of two new partners- David M. Longo, Ph.D. and Yuki Onoe- effective January 1, 2015.

The diverse backgrounds and technical knowledge of the new partners range from electrical, computer, and mechanical-related technologies to chemicals and pharmaceuticals. Their practices touch all aspects of IP law, including counseling, prosecution, and litigation.

The firm is also pleased to announce the elevation of one new senior attorney- Sameer Gokhale.

New Partners:

David M. Longo, Ph.D. is an attorney in the firm’s Electrical Patent Prosecution group. His legal experience covers all aspects of client counseling, patent portfolio development and management, prosecution, reissue applications, reexamination proceedings, appeals, opinions of counsel, due diligence, pre-litigation counseling, and license negotiations. He works actively with international clients to develop and grow their utility and design patent portfolios. Dr. Longo holds a J.D. from The George Washington University Law School, a Ph.D. and M.S. in Materials Science & Engineering from the University of Virginia and a B.S. in Physics & Philosophy from the University of Scranton.

Yuki Onoe is an attorney in the firm’s Chemical, Pharmaceutical/Medical Devices, and Litigation practice groups. Ms. Onoe prepares and prosecutes U.S. patent applications covering a wide range of technical areas such as semiconductor materials, optical components, pharmaceuticals, plastic packaging materials, battery components, and construction materials. Ms. Onoe’s legal experience covers opinions, strategic counseling and pre-litigation investigations and discovery work in patent litigations. Ms. Onoe holds a J.D. from The John Marshall Law School, a M.S. in Linguistics from Georgetown University and a M.S. and B.S. in Chemistry from Osaka University in Osaka, Japan.

About Oblon:

Assisting clients for over 40 years, Oblon is one of the largest intellectual property law firms in the United States. Oblon’s 120+ legal professionals provide a full range of intellectual property services to some of the world’s leading innovators. The firm is headquartered within steps of the United States Patent and Trademark Office with an affiliate office in Tokyo, Japan.