the firm's post-grant practitioners are some of the most experienced in the country.

Peifang  Tian, Ph.D.
Colin B. Harris
Jeffrey B. McIntyre
John  Sipos
Christopher I. Donahue
James R. Love
Daniel J. Pereira, Ph.D.
Steven B. Chang
Alexander B. Englehart
Edwin D. Garlepp
Surinder  Sachar
Nanlin  Wang, Ph.D.
Robert T. Pous
Eckhard H. Kuesters
Michael R. Casey, Ph.D.
Kurt M. Berger, Ph.D.
Norman F. Oblon
Yuanyi (Alex) Zhang, Ph.D.
Stephen G. Baxter, Ph.D.
Yorikatsu  Hohokabe, Ph.D.
Vincent K. Shier, Ph.D.
Bogdan A. Zinchenko
Charles L. Gholz
Marina I. Miller, Ph.D.
Nicholas  Rosa, Ph.D.
Yuki  Onoe
Ryan W. Smith
Jay E. Rowe, Jr., Ph.D.
Christopher  Ricciuti
Craig R. Feinberg
Akihiro  Yamazaki
Tao  Feng, Ph.D.
Stefan Uwe  Koschmieder, Ph.D.
Robert W. Downs
Yin Y. Nelson, Ph.D.
Aristotelis M. Psitos
John S. Kern
John F. Presper
Elissa L. Sanford
Kevin M. McKinley
Chika (Teranishi) Iitoyo
Teddy S. Gron
Kevin L. Hartman, Ph.D.
Jianping (James)  Wu
Erik M. Stang, Ph.D.
Richard D. Kelly
J. Derek  Mason, Ph.D., CLP
Philippe J.C. Signore, Ph.D.
Tia D. Fenton
Johnny  Ma
Aldo  Martinez
Sameer  Gokhale
Grace E. Kim
Anna Z. Lloyd
Arthur I. Neustadt
Kevin Ross  Davis
Frank J. West
Yanwen  Fei
Alec M. Royka
Diane  Jones
Andrew M. Ollis
Kasumi  Kanetaka
Robert  Tarcu
Long  Phan, Ph.D.
Carl E. Schlier
Brian B. Darville
Derek  Lightner, Ph.D.
Jenchieh (Joseph) Yuan
Thomas M. Cunningham, Ph.D.
Ching-Cheng (Tony)  Chang
David M. Longo, Ph.D.
Eric W. Schweibenz
Dale M. Shaw


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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.

USPTO is Changing Policy for Electronic Retrieval of European Priority Applications

  • December 15, 2021
  • Firm News

The U.S. Patent and Trademark Office (USPTO) has announced that the World Intellectual Property Organization (WIPO) Digital Access Service (DAS) will be used to manage the electronic retrieval of European (EP) priority applications beginning on January 1, 2022.

This means that for regular U.S. utility patent applications (i.e., Paris convention or PCT bypass applications) filed with the USPTO on or after January 1, 2022, it will be necessary to provide a DAS code for each EP priority application so that the USPTO can electronically retrieve the same. Beginning on January 1, 2022, the USPTO will no longer electronically retrieve EP priority applications via Direct Bilateral Exchange with the European Patent Office (EPO). See

The USPTO is encouraging applicants to begin providing the DAS code for each EP priority application immediately, even for U.S. utility patent applications filed before January 1, 2022. According to the USPTO, this “will prepare the applicant for the full switch to the WIPO DAS. Also, having the WIPO DAS access code should reduce potential delays that may occur if electronic retrieval is attempted by the USPTO on or after January 1, 2022.” The USPTO is also encouraging applicants to review their regular U.S. utility patent applications filed before January 1, 2022, that claim priority to an EP application but did not include a DAS code, to check whether electronic retrieval of the EP priority application by the USPTO was successful. Importantly, the USPTO is advising applicants “that they continue to bear the ultimate responsibility for ensuring that the priority document is filed by the time limit set forth in 37 CFR [§] 1.55.”

Detailed information about the USPTO’s announcement is available here: