Atty. Yoichiro Yamaguchi

Atty. Yoichiro Yamaguchi

Yoichiro Yamaguchi is a lawyer practicing intellectual property, appeals, licensing. Yoichiro has been licensed for 38 years.

Washington Washington 38 yrs experience 38 year
Call (240) 885-7614 Book Appointment

Profile Summary

About Yoichiro Yamaguchi at a glance

Yoichiro Yamaguchi is a Partner based in Washington, District of Columbia, practicing at Michael Best And Friedrich Llp. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on ip and appellate. Admitted to practice in Japan (as Patent Attorney), admitted to practice before Japanese Patent Office and to appear as Pate (1988), New York (1994), U.S. Court of Appeals for the Federal Circuit (1994), and District of Columbia (2000). Educated at College of Technology and School of Law, Waseda University, Japan (LL.B. George, 1974). Active member of New York State and American Bar Associations American Intellectual Property Law Association Licensing Executive Society. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Yoichiro Yamaguchi is a lawyer practicing intellectual property, appeals, licensing
  • Yoichiro has been licensed for 38 years
  • Yoichiro practices at Michael Best & Friedrich LLP in Washington, DC

Practice Areas Explained

Yoichiro Yamaguchi's Areas of Practice

Each practice area below reflects the types of cases Yoichiro Yamaguchi handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Yoichiro Yamaguchi is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Appellate Practice

Appellate attorneys for civil and criminal appeals at state and federal court.

Yoichiro Yamaguchi is one of 86,319 appellate attorneys indexed nationally. Browse appellate attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in District of Columbia courts without local counsel or pro hac vice admission.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Yoichiro Yamaguchi

Where is Yoichiro Yamaguchi's law office located?
Yoichiro Yamaguchi's law practice is located in Washington, District of Columbia. The firm is Michael Best And Friedrich Llp. You can contact the office directly through this profile page.
What practice areas does Yoichiro Yamaguchi handle?
Yoichiro Yamaguchi focuses on ip, appellate. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Yoichiro Yamaguchi practiced law?
Yoichiro Yamaguchi has 38+ years of legal experience and has been licensed since 1988.
Where did Yoichiro Yamaguchi go to law school?
Yoichiro Yamaguchi earned their education at (LL.B. George, 1974).
How can I contact Yoichiro Yamaguchi for a consultation?
You can contact Yoichiro Yamaguchi directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

LL.B. George
College of Technology and School of Law, Waseda University, Japan
- 1974

Bar Admissions

Japan (as Patent Attorney), admitted to practice before Japanese Patent Office and to appear as Pate
Admitted: 1988
New York
Admitted: 1994
U.S. Court of Appeals for the Federal Circuit
Admitted: 1994
District of Columbia
Admitted: 2000

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