Atty. Mary E. O'Byrne

Atty. Mary E. O'Byrne

Mary E. O'Byrne is a lawyer practicing corporate law, intellectual property, litigation.

Sacramento Sacramento 41 yrs experience 41 year
Call (833) 767-4648 Book Appointment

Profile Summary

About Mary E. O'Byrne at a glance

Mary E. O'Byrne is a Varian Med. Systems Inc. based in Sacramento, California. They have 41+ years of legal experience, licensed to practice since 1985. Their practice focuses on business, ip, and litigation. Admitted to practice in California (1985). Educated at Hastings College of the Law, University of California (J.D., 1985) and University of Illinois at Chicago (B.A., 1981). Recognitions include Peer Reviewed. Serands clients in Sacramento, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mary E. O'Byrne is a lawyer practicing corporate law, intellectual property, litigation
  • Mary received a B.A. degree from University of Illinois at Chicago in 1981, and has been licensed for 41 years
  • Mary practices in Sacramento, CA

Practice Areas Explained

Mary E. O'Byrne's Areas of Practice

Each practice area below reflects the types of cases Mary E. O'Byrne handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Mary E. O'Byrne is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Intellectual Property

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

Mary E. O'Byrne is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Mary E. O'Byrne is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 Sacramento 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 Sacramento or all attorneys in California.

Frequently Asked

Common questions about Mary E. O'Byrne

Where is Mary E. O'Byrne's law office located?
Mary E. O'Byrne's law practice is located in Sacramento, California. You can contact the office directly through this profile page.
What practice areas does Mary E. O'Byrne handle?
Mary E. O'Byrne focuses on business, ip, litigation. Each practice area listed reflects experience handling cases of that type in California.
How long has Mary E. O'Byrne practiced law?
Mary E. O'Byrne has 41+ years of legal experience and has been licensed since 1985.
Where did Mary E. O'Byrne go to law school?
Mary E. O'Byrne earned their education at (J.D., 1985); (B.A., 1981).
How can I contact Mary E. O'Byrne for a consultation?
You can contact Mary E. O'Byrne 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 Mary E. O'Byrne received?
Mary E. O'Byrne's notable recognition includes: Peer Reviewed.

Education

J.D.
Hastings College of the Law, University of California
- 1985
B.A.
University of Illinois at Chicago
- 1981

Awards

Peer Reviewed

Bar Admissions

California
Admitted: 1985

Reviews

4.6
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