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


Artificial Intelligence (AI)
Artificial Intelligence (AI)
Digital Health
Digital Health
Energy & Renewables
Energy & Renewables

Fast Facts

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.

A few ways to

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
Learn More +


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.

John S. Kern

John S. Kern

Partner ∙ US Office
T: (703) 413-3000
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John S. Kern is a partner, Head of Oblon's Electrical/Mechanical Practice Group and is a member of the firm’s Management Committee. With a strong foundation in engineering and technology, Mr. Kern brings a unique skill set and perspective to his practice that encompasses all aspects of patent law including, patent prosecution, litigation, and post-grant review proceedings. Mr. Kern is a skilled appellate practitioner, having decades of experience before the USPTO Patent Trial & Appeal Board and its predecessor, the Board of Patent Appeals and Interferences. He has actively handled and advised on numerous inter-partes review (IPR) proceedings for his clients. Throughout his career, Mr. Kern has regularly drafted and prosecuted patent applications before the USPTO, as well as represented clients in reexamination matters. Additionally, Mr. Kern has successfully represented numerous clients in litigation before various district courts and the U.S. International Trade Commission.

A former electrical engineer, Mr. Kern has worked in diversified technologies throughout his legal career in the electrical, mechanical and software arts, including semiconductor devices, communication networks, video coding/compression, medical devices, automotive technologies, display devices, printers, microlithography, nanotechnology, and analog/digital circuit design. He has counseled both small and large multinational corporations in designing and bringing new products to market. Some of Mr. Kern’s clients include leading semiconductor, telecommunications, and information technology companies.

Mr. Kern’s diverse intellectual property practice also includes considerable experience in preparing infringement and validity opinions, drafting claims to cover industry standards, and patent pool evaluation and administration.


  • George Mason University School of Law (J.D.)
  • Virginia Polytechnic Institute and State University (B.S.)
    • Electrical Engineering


  • Virginia
  • Registered to practice before the U.S. Patent and Trademark Office
  • U.S. Court of Appeals, Federal Circuit


  • The Best Lawyers in America® (2024)
  • Managing IP Magazine named 'IP Star' (2021, 2022 and 2023)

Professional Affiliations

  • Virginia State Bar Association