Atty. Catherine Sum

Atty. Catherine Sum

Catherine Sum is a lawyer. Catherine received a degree from University of Toronto, and has been licensed for 13 years.

Palo Alto Palo Alto 13 yrs experience 13 year
Call (650) 715-0107 Book Appointment

Profile Summary

About Catherine Sum at a glance

Catherine Sum is an Attorney based in Palo Alto, California, practicing at Morrison & Foerster LLP. They have 13+ years of legal experience, licensed to practice since 2013. Admitted to practice in New York (2013) and California (2020). Educated at University of Toronto (—). Serands clients in Palo Alto, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Catherine Sum is a lawyer
  • Catherine received a degree from University of Toronto, and has been licensed for 13 years
  • Catherine practices at Morrison & Foerster LLP in Palo Alto, CA

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 Palo Alto 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 Palo Alto or all attorneys in California.

Frequently Asked

Common questions about Catherine Sum

Where is Catherine Sum's law office located?
Catherine Sum's law practice is located in Palo Alto, California. The firm is Morrison & Foerster LLP. You can contact the office directly through this profile page.
How long has Catherine Sum practiced law?
Catherine Sum has 13+ years of legal experience and has been licensed since 2013.
Where did Catherine Sum go to law school?
Catherine Sum earned their education at (—).
How can I contact Catherine Sum for a consultation?
You can contact Catherine Sum 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

University of Toronto
- In Progress

Bar Admissions

New York
Admitted: 2013
California
Admitted: 2020

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