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.

Russell Sorber

Patent Agent
T: (703)413-3000
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Russell Sorber is a patent agent in the Electrical and Mechanical Patent Prosecution practice group where he focuses on drafting patent applications for domestic and international clients. He has more than 20 years engineering expertise in the fields of software, medical devices, e-commerce, and telecommunications. Mr. Sorber’s telecommunication experience spans over 15 years and includes GSM mobile devices, software development, as well as engineering work for EDGE and 5G network components.

Mr. Sorber worked for more than 10 years at a cellular device and network manufacturer where he helped develop telecommunication products including the Multi-Media Message Center, Short Message Service Center (SMSC) and SMS Gateway, which are in use by U.S. telecommunication carriers. While an engineer and a patent agent at the company, Mr. Sorber also served on the company’s network patent evaluation committee and assisted with patent litigation.  

His 5G telecommunication engineering experience includes developing feature requirements for 5G gateway devices and for the 5G Broadcast Message Center (BMC), which is currently in use by almost every carrier in North America and which delivers Amber Alerts, weather warnings, and other emergency messages.

Mr. Sorber’s 5G legal experience includes protecting enhancements to the 5G Network Resource Function and protecting 5G network performance enhancements.


  • University of Illinois at Urbana-Champaign (B.S.)
    • Computer Science


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


  • Telecommunications devices including developing requirements, specifications and claims directed to 3GPP and TIA/EIA industry standards
    • Mobile devices
    • Telecommunication Network Devices including
      • Mobile Telephone Switching Center (MTSO) software
      • Automatic Call Distribution (ACD)
      • Multi-Media Message Center (MMSC)
      • Short-Message Service Center (SMSC)
      • Broadcast Message Center (BMC) software
  • Medical Devices including
    • Image Scanning diagnostic devices
    • Home health devices
    • Blood testing devices

Professional Affiliations

  • American Intellectual Property Law Association (AIPLA)