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
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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.

Alexander B. Englehart

Alexander B. Englehart

Of Counsel ∙ US Office
T: (703) 412-6225
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Alexander B. Englehart is a registered patent attorney serving as Of Counsel in the firm’s Litigation Practice Group. He works on all areas of patent litigation in U.S. district courts, the ITC, and the USPTO. In addition, he provides legal opinions to help clients preemptively manage their risk as they develop new products and services.  He also prosecutes patent applications for the firm’s Electrical/Mechanical Practice Group.

Mr. Englehart litigates cases involving a wide range of technologies, including mobile devices, wireless networking, sporting goods, automotive parts, metallurgy, and cosmetics.  Mr. Englehart also advises clients on the interrelationship between district court, ITC, and post-grant proceedings at the USPTO.  His cases often involve high-stakes litigation in conjunction with post-grant proceedings.  He has also represented clients in intellectual property disputes at industry trade shows.

During law school, Mr. Englehart served as a judicial extern for Judge Randall Rader of the U.S. Court of Appeals for the Federal Circuit and Magistrate Judge Bernard Zimmerman of the U.S. District Court for the Northern District of California.  He has lectured on ITC practice at the University of Washington’s Center for Advanced Study and Research on Innovation Policy and to the Japanese Intellectual Property Association.  He is currently based in the Philadelphia, Pennsylvania area.


  • University of Washington School of Law (J.D.)
  • University of California, Berkeley (B.A.)
    • Computer Science and Math


  • Virginia
  • Pennsylvania
  • Registered to practice before the U.S. Patent and Trademark Office
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the Eastern District of Virginia
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the Western District of Texas
  • U.S. District Court for the Eastern District of Michigan


  •  Managing Intellectual Property Magazine named "Rising Star" (2019, 2021, 2022)

Professional Affiliations

  • American Bar Association
  • American Intellectual Property Law Association (AIPLA)