Atty. Sean Michael Cassis

Atty. Sean Michael Cassis

Sean Michael Cassis is a lawyer practicing bankruptcy, contracts, criminal law and 13 other areas of law. Sean received a degree from Univ of LaVerne COL, and has been licensed for 17 years.

Ontario Ontario 17 yrs experience 17 year
Call (747) 221-6850 Book Appointment

Profile Summary

About Sean Michael Cassis at a glance

Sean Michael Cassis is a chapter 7, contracts, trusts, probate, and chapter 13 attorney based in Ontario, California. They have 17+ years of legal experience, licensed to practice since 2009. Admitted to practice in California (2009). Educated at University of La Verne College of Law (Juris Doctor, 2008) and Univ of LaVerne COL Univ of LaVerne COL Univ of LaVerne COL Ontario CA Ontario CA Ontario CA Grand Valley St Univ Grand Valley St Univ Grand Valley St Univ Allendale MI Allendale MI Allendale (—). Serands clients in Ontario, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Sean Michael Cassis is a lawyer practicing bankruptcy, contracts, criminal law and 13 other areas of law
  • Sean received a degree from Univ of LaVerne COL, and has been licensed for 17 years
  • Sean practices in Ontario, CA

Practice Areas Explained

Sean Michael Cassis's Areas of Practice

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

Chapter 7 Bankruptcy

Sean Michael Cassis is one of 8,886 chapter 7 attorneys indexed nationally. Browse chapter 7 attorneys in California →

Contracts

Sean Michael Cassis is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in California →

Trusts

Sean Michael Cassis is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in California →

Probate

Sean Michael Cassis is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in California →

Chapter 13 Bankruptcy

Sean Michael Cassis is one of 6,375 chapter 13 attorneys indexed nationally. Browse chapter 13 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 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 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 Ontario or all attorneys in California.

Frequently Asked

Common questions about Sean Michael Cassis

Where is Sean Michael Cassis's law office located?
Sean Michael Cassis's law practice is located in Ontario, California. You can contact the office directly through this profile page.
What practice areas does Sean Michael Cassis handle?
Sean Michael Cassis focuses on chapter 7, contracts, trusts, probate, chapter 13. Each practice area listed reflects experience handling cases of that type in California.
How long has Sean Michael Cassis practiced law?
Sean Michael Cassis has 17+ years of legal experience and has been licensed since 2009.
Where did Sean Michael Cassis go to law school?
Sean Michael Cassis earned their education at (Juris Doctor, 2008); (—).
How can I contact Sean Michael Cassis for a consultation?
You can contact Sean Michael Cassis 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

Juris Doctor
University of La Verne College of Law
- 2008
Univ of LaVerne COL Univ of LaVerne COL Univ of LaVerne COL Ontario CA Ontario CA Ontario CA Grand Valley St Univ Grand Valley St Univ Grand Valley St Univ Allendale MI Allendale MI Allendale
- In Progress

Bar Admissions

California
Admitted: 2009

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