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.

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Our Blogs

Bogdan A. Zinchenko

Bogdan A. Zinchenko

Associate ∙ US Office
T: (703) 413-6508
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Bogdan A. Zinchenko is an associate in Oblon’s Electrical Patent Prosecution group.  His practice focuses on various aspects of patent law including patent drafting, prosecution, counseling and litigation support. Mr. Zinchenko, who is a former electrical engineer, works primarily in the electrical, software and mechanical arts. His legal experience includes matters involving analog/digital integrated circuits, automotive technologies, computer networks, defense systems, fabrication, liquid crystal displays, medical devices, natural language processing (NLP), semiconductor devices, telecommunications and video processing.

Prior to joining the firm, Mr. Zinchenko worked at a DC based general practice firm, preparing and prosecuting patent applications and counseling a variety of clients primarily on the development of IP strategies and patent portfolio management.

Bar Membership Other Than Virginia


  • University of Baltimore School of Law (J.D.)
  • Cornell University (M.Eng.)
    • Electrical Engineering
  • Cornell University (B.S.)
    • Electrical Engineering


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


  • Russian