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 Welcomes Patent Attorney Donald R. McPhail

  • July 15, 2022
  • Firm News

Alexandria, VA – Oblon, McClelland, Maier & Neustadt, LLP, is pleased to announce that Donald R. McPhail has joined the firm’s Litigation and Post-Grant Proceedings Practice groups.

Mr. McPhail has more than 30 years of experience in intellectual property law and regularly represents plaintiffs and defendants in patent and trademark matters before the U.S. district courts and the Court of Appeals for the Federal Circuit. He also has extensive experience with post-grant matters before the U.S. Patent & Trademark Office, including post grant review and inter partes review proceedings, patent term extension applications, ex parte reexaminations, and re-issue applications, as well as in oppositions before the European Patent Office. In addition, Mr. McPhail has prosecuted patent applications and was a former examiner with the PTO.

"We are delighted to welcome Don to the firm. His extensive experience with all aspects of intellectual property law will help in opening up opportunities for the firm to grow our patent litigation trial and PTAB practices,” said Oblon Managing Partner Philippe Signore.

Mr. McPhail is experienced in counseling clients on patent portfolio development and enforcement in a wide range of technologies, including pharmaceuticals and biosimilars, regulated medical devices, semiconductor design and operation, thin film transistor manufacturing and design, voice-over-internet telephony, computer firewalls, routers and switches, network topology and message routing, LCD and LED design and operation, PECVD manufacturing processes, metal smelting furnaces, avionics, video signaling, computer software, and electronic point of sale devices. 

Mr. McPhail earned his Juris Doctor from the George Mason University School of Law with a focus on patent law and obtained both his Master of Science in organic chemistry and a bachelor of science in chemistry from Duke University.