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.

Stay informed with

Our Blogs

Vivek Biswas

T: (703) 412-6382
F: (703) 413-2220
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Download Detailed PDF

Vivek Biswas is an associate in the firm’s Litigation group. His practice focuses on all types of intellectual property litigation, including patent, copyright, and trademark litigation.  Mr. Biswas’ educational background is in Chemical Engineering, and he has experience litigating matters involving a wide variety of technologies.

Prior to joining Oblon, Mr. Biswas was an Associate in the IP Litigation group at a global law firm in Chicago. He also served as a judicial intern for Judge K. Nicole Mitchell in the Eastern District of Texas while in law school. 


  • Vanderbilt University Law School (J.D.)
  • Managing Editor, Vanderbilt Journal of Entertainment and Technology Law
  • Articles Editor, Environmental Law and Policy Annual Review
  • Washington University in St. Louis
    •  Chemical Engineering (B.S.)


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


  • Bengali