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 Names Two Partners to Lead the Chemical Patent Prosecution Practice Group

  • January 17, 2020
  • Firm News

Partners Yuki Onoe and Daniel J. Pereira, Ph.D., have been promoted to Co-heads of the Chemical Patent Prosecution Group.   

Pereira is a chemical biotech patent attorney and a member of the Management Committee, the firm’s Chemical Patent Prosecution Group and the Life Sciences Practice Group.  Onoe is head of the firm’s Tokyo office as well as partner of the firm’s Chemical Patent Prosecution, Life Sciences, and Litigation Practice Groups. 

“We are excited about the collective experience that Yuki and Dan bring to the position both as Firm representatives to our clients as well as their familiarity with the Firm’s internal practices gained through over 30 years with the Firm, much of it in management,” said Managing Partner, Philippe Signore.  

Congratulations to Dan and Yuki on this well-deserved promotion.