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
Learn More +

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.

Oblon Ranked for Intellectual Property in Northern Virginia in 2023 Chambers USA Guide

  • June 9, 2023
  • Firm News

We are pleased to announce that the 2023 edition of the Chambers USA legal industry guide has ranked the Oblon firm in Northern Virginia for Intellectual Property.

“We are pleased and humbled to be included by Chambers USA as among the top intellectual property law firms in the Northern Virginia region,” said Oblon Managing Partner Daniel J. Pereira.  “The ranking represents another highly successful year for our firm and reflects the hard work and dedication of our attorneys to meet and exceed our clients’ expectations in handling their complex intellectual property matters.”

The Chambers USA guide stresses that Oblon is “adept at advising on patent litigation, IP transactions and post-grant proceedings” and “has an impressive international footprint, with notable strength in the Japanese market through its affiliate office in Tokyo.”

According to a firm client quoted in the Chambers USA guide, “Oblon has the ability to handle our complicated technology with experienced and qualified patent attorneys that have been working on this subject for long time."

Other firm clients commented on Oblon’s penchant to “take in a business perspective to propose appropriate legal and IP solution in complex situations” and “assist with complex engineering questions or concerns."

Chambers and Partners annually ranks leading U.S. firms and attorneys based on in-depth research and interviews with law firms, clients and third parties. Chambers assesses attorneys on attributes valued by clients, including technical legal ability, professional conduct, client service, commercial astuteness, diligence, and commitment. For more information, visit