Atty. William Porter Green

Atty. William Porter Green

William Porter Green is a lawyer practicing intellectual property. William received a B.A. degree from Illinois College in 1941, and has been licensed for 79 years.

Pasadena Pasadena 79 yrs experience 79 year
Call (626) 714-2056 Book Appointment

Profile Summary

About William Porter Green at a glance

William Porter Green is a ip attorney based in Pasadena, California. They have 79+ years of legal experience, licensed to practice since 1947. Admitted to practice in Illinois (1947), California (1948), U.S. Supreme Court (1973), and U.S. Court of Appeals, Fifth Circuit (1978). Educated at Northwestern University (J.D., 1947) and Illinois College (B.A., 1941). Recognitions include AV Preeminent. Serands clients in Pasadena, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Porter Green is a lawyer practicing intellectual property
  • William received a B.A. degree from Illinois College in 1941, and has been licensed for 79 years
  • William practices in Pasadena, CA

Practice Areas Explained

William Porter Green's Areas of Practice

Each practice area below reflects the types of cases William Porter Green 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.

William Porter Green is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Pasadena are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California 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 California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Pasadena or all attorneys in California.

Frequently Asked

Common questions about William Porter Green

Where is William Porter Green's law office located?
William Porter Green's law practice is located in Pasadena, California. You can contact the office directly through this profile page.
What practice areas does William Porter Green handle?
William Porter Green focuses on ip. Each practice area listed reflects experience handling cases of that type in California.
How long has William Porter Green practiced law?
William Porter Green has 79+ years of legal experience and has been licensed since 1947.
Where did William Porter Green go to law school?
William Porter Green earned their education at (J.D., 1947); (B.A., 1941).
How can I contact William Porter Green for a consultation?
You can contact William Porter Green 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.
What awards or recognition has William Porter Green received?
William Porter Green's notable recognition includes: AV Preeminent.

Practice Areas

Education

J.D.
Northwestern University
- 1947
B.A.
Illinois College
- 1941

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1947
California
Admitted: 1948
U.S. Supreme Court
Admitted: 1973
U.S. Court of Appeals, Fifth Circuit
Admitted: 1978
U.S. Court of Appeals, Ninth Circuit
Admitted: 1978
U.S. Court of Customs and Patent Appeals
Admitted: 1982
U.S. Court of Appeals for the Federal Circuit
Admitted: 1982
U.S. District Court, Southern District of Texas registered to practice before U.S. Patent and Tradem
Admitted: 1986

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