Atty. Marcus Steven Loo

Atty. Marcus Steven Loo

Marcus Steven Loo is a lawyer practicing workers compensation, asbestos/toxic tort, employment & labor and 3 other areas of law. Marcus received a B.S. degree from University of California, Irvine in 1994, and has been licensed for 24 years.

Ontario Ontario 24 yrs experience 24 year
Call (279) 221-5067 Book Appointment

Profile Summary

About Marcus Steven Loo at a glance

Marcus Steven Loo is an Associate based in Ontario, California, practforg at Rose, Klein & Marias LLP. They haand 24+ years of legal experience, licensed to practice since 2002. Admitted to practice in California (2002) and Nevada (Inactive) U.S. District Court, Central District of California (2004). Educated at University of the Pacific, McGeorge School of Law (J.D., 1999) and University of California, Irvine (B.S. Biological, 1994). Actiand member of State Bar of California. Serands clients in Ontario, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Marcus Steven Loo is a lawyer practicing workers compensation, asbestos/toxic tort, employment & labor and 3 other areas of law
  • Marcus received a B.S. degree from University of California, Irvine in 1994, and has been licensed for 24 years
  • Marcus practices at Rose, Klein & Marias LLP in Ontario, CA

Jurisdictional Context

Why local counsel matters in California

Practforg law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand law. Cases originating in Ontario 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 substantiand 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 Ontario or all attorneys in California.

Frequently Asked

Common questions about Marcus Steven Loo

Where is Marcus Steven Loo's law office located?
Marcus Steven Loo's law practice is located in Ontario, California. The firm is Rose, Klein & Marias LLP. You can contact the office directly through this profile page.
How long has Marcus Steven Loo practiced law?
Marcus Steven Loo has 24+ years of legal experience and has been licensed since 2002.
Where did Marcus Steven Loo go to law school?
Marcus Steven Loo earned their education at (J.D., 1999); (B.S. Biological, 1994).
How can I contact Marcus Steven Loo for a consultation?
You can contact Marcus Steven Loo 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

J.D.
University of the Pacific, McGeorge School of Law
- 1999
B.S. Biological
University of California, Irvine
- 1994

Bar Admissions

California
Admitted: 2002
Nevada (Inactive) U.S. District Court, Central District of California
Admitted: 2004

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