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

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


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.

Johnny  Ma

Johnny Ma

Partner ∙ US Office
T: (703) 412-7037
Join My LinkedIn Network
Download My vCard
Download Summary PDF
Download Detailed PDF

Johnny Ma is a partner in the firm's Electrical Patent prosecution group. He represents clients in protecting their core technologies and obtaining patents for standards aimed at increasing recognition of their technologies as international standards.

Mr. Ma prosecutes non-provisional and reissue patent applications relating to a wide range of technologies including printers, cameras, displays, networking, robotics, wireless communications, semiconductors, power devices and information processing. In addition to prosecuting non-provisional and reissue applications, Mr. Ma’s patent application work includes filing and converting provisional applications and drafting new applications.

Mr. Ma is experienced in drafting and prosecuting patent applications directed to various technologies, including patent applications directed to robotics and automation for machine tools and wireless broadcasting.

Before joining Oblon, Mr. Ma was a Patent Examiner in interactive video distribution systems at the United States Patent and Trademark Office (USPTO). This work included video on demand, commercial/message insertion or substitution, electronic program guide interfaces and functionality, and access control or blocking.


  • George Mason University School of Law (J.D.)
  • University of Virginia (B.S.)
    • Electrical Engineering


  • Virginia
  • Registered to practice before the U.S. Patent and Trademark Office
  • Supreme Court of Virginia