Atty. Mark Steven O'Brien

Atty. Mark Steven O'Brien

Mark Steven O'Brien is a lawyer practicing corporate/business, trust and probate, real property law and 7 other areas of law. Mark has been licensed for 26 years.

Cleveland Heights Cleveland Heights 26 yrs experience 26 year
Call (855) 700-0576 Book Appointment

Profile Summary

About Mark Steven O'Brien at a glance

Mark Steven O'Brien is a trusts, probate, family law, estate planning, and business attorney based in Cleveland Heights, Ohio. They have 26+ years of legal experience, licensed to practice since 2000. Admitted to practice in Ohio (2000). Serands clients in Cleveland Heights, OH and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Steven O'Brien is a lawyer practicing corporate/business, trust and probate, real property law and 7 other areas of law
  • Mark has been licensed for 26 years
  • Mark practices in Cleveland Heights, OH

Practice Areas Explained

Mark Steven O'Brien's Areas of Practice

Each practice area below reflects the types of cases Mark Steven O'Brien handles, with a brief overview of what that area of law covers.

Trusts

Mark Steven O'Brien is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in Ohio →

Probate

Mark Steven O'Brien is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Ohio →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Mark Steven O'Brien is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Ohio →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Mark Steven O'Brien is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Ohio →

Business & Corporate Law

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

Mark Steven O'Brien is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Ohio →

Jurisdictional Context

Why local counsel matters in Ohio

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

Looking for additional Ohio attorneys? Browse all attorneys in Cleveland Heights or all attorneys in Ohio.

Frequently Asked

Common questions about Mark Steven O'Brien

Where is Mark Steven O'Brien's law office located?
Mark Steven O'Brien's law practice is located in Cleveland Heights, Ohio. You can contact the office directly through this profile page.
What practice areas does Mark Steven O'Brien handle?
Mark Steven O'Brien focuses on trusts, probate, family law, estate planning, business. Each practice area listed reflects experience handling cases of that type in Ohio.
How long has Mark Steven O'Brien practiced law?
Mark Steven O'Brien has 26+ years of legal experience and has been licensed since 2000.
How can I contact Mark Steven O'Brien for a consultation?
You can contact Mark Steven O'Brien 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.

Bar Admissions

Ohio
Admitted: 2000

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