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


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Artificial Intelligence (AI)
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Digital Health
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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
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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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John  Sipos

John Sipos

Patent Agent ∙ US Office
T: (703) 413-3000
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John Sipos is a registered patent agent in the firm’s Mechanical Patent Prosecution practice group. His focus is reviewing the firm’s allowed patent applications prior to their issuance. He reviews the prosecution history of files to ensure their high quality and completeness. Mr. Sipos corrects any defects by following up with examiners at the United States Patent and Trademark Office (USPTO) with interviews, amendments and petitions.

Prior to joining the firm in 2008, Mr. Sipos served 36 years at the USPTO as an Expert Primary Examiner and Supervisory Patent Examiner. He was recognized as an Expert Examiner in 1983 in the packaging art and subsequently supervised examiners in the packaging art as well as in a range of other manufacturing technologies.

Throughout his career Mr. Sipos was assigned to several areas within the USPTO outside of patent examination Technology Centers. In the Office of Patent Classification, he established and developed the class schedule and classification definitions for the packaging art. In the Office of Petitions he addressed various issues and petitions from applicants regarding prosecution problems. In the office of Application Assistance Unit he provided applicants with assistance regarding pre-examination and post-examination questions.

During his career at the USPTO, Mr. Sipos was recognized with the Distinguished USPTO Service Award by the American Intellectual Property Law Association and given the United States Department of Commerce Bronze Medal as well as numerous Special Achievement Awards and Special Outstanding Awards.

Mr. Sipos’ extensive patent examination knowledge and insider’s perspective of the USPTO ensures a thorough review of the firm’s allowed cases to assure that each patent application is of the highest quality.


  • City College of New York (B.A.)
    • Mechanical Engineering


  • Registered to practice before the U.S. Patent and Trademark Office


  • Distinguished USPTO Service Award by the American Intellectual Property Law Association (1992)
  • United Sates Department of Commerce Bronze Medal (1994)
  • USPTO Recognition as Expert in the Package Making art (1983)
  • USPTO Annual Special Achievement Awards (1974-2000)
  • USPTO Annual Outstanding Performance Rating (1979-2000)

Professional Affiliations

  • American Intellectual Property Law Association