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Marc Kirby Callahan, Business Attorney in Irvine, California

Over 35 years of legal practice · focused on Business, Class Action, and General

AttorneyatJones Day

Irvine, CA

Practicing business in Irvine since 1991.

35+
Years practicing
1
Bar admission

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Quick answer

Marc Kirby Callahan is an attorney based in Irvine, CA. The practice focuses on Business, Class Action, and General. Marc has over 35 years of legal experience. Currently practicing at Jones Day.

Based in
Irvine, CA
Experience
over 35 years
Known for
Business · Class Action · General
  • Handles Business, Class Action, and General matters from Irvine, CA.
  • Over 35 years of practice as a licensed attorney.

About Marc Kirby Callahan: Marc Kirby Callahan is an attorney based in Irvine, CA. The practice focuses on Business, Class Action, and General. Marc has over 35 years of legal experience. Currently practicing at Jones Day.

Areas of practice

Practice areas handled by Marc Kirby Callahan

Marc concentrates on business, class action, general, litigation, and personal injury. Each area below outlines the kind of case Marc handles, typical outcomes to expect, and how the intake process starts.

Business cases in Irvine, California

Marc takes business matters in Irvine, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Marc agrees to represent you.

Class Action cases in Irvine, California

Marc takes class action matters in Irvine, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Marc agrees to represent you.

General cases in Irvine, California

Marc takes general matters in Irvine, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Marc agrees to represent you.

Litigation cases in Irvine, California

Marc takes litigation matters in Irvine, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Marc agrees to represent you.

Personal Injury cases in Irvine, California

Marc takes personal injury matters in Irvine, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Marc agrees to represent you.

Biography

About Marc Kirby Callahan — Over 35 years of California business experience

Marc Kirby Callahan is an attorney based in Irvine, CA. The practice focuses on Business, Class Action, and General. Marc has over 35 years of legal experience. Currently practicing at Jones Day.

Marc Kirby Callahan is a lawyer practicing business & tort litigation, class action & multidistrict litigation, partnership and 1 other area of law. Marc received a B.A. degree from University of California, Los Angeles in 1988, and has been licensed for 35 years. Marc practices at Jones Day in Irvine, CA.

How Marc handles business matters

Marc Kirby Callahan is a lawyer practicing business & tort litigation, class action & multidistrict litigation, partnership and 1 other area of law. Marc received a B.A. degree from University of California, Los Angeles in 1988, and has been licensed for 35 years. Marc practices at Jones Day in Irvine, CA.

The kind of cases Marc takes

Marc reviews new inquiries case-by-case for business, class action, and general matters in Irvine and the surrounding California area.

Credentials

Marc Kirby Callahan's legal education and bar admissions

  • University of California, Hastings College of the Law

    J.D. · 1991

  • University of California, Los Angeles

    B.A. · 1988

Jurisdictions

Marc's state bar admissions

  • California

    1991 · ACTIVE

Marc studied at J.D. in University of California, Hastings College of the Law and B.A. in University of California, Los Angeles.

Law school and academic background

Marc completed J.D. in University of California, Hastings College of the Law and B.A. in University of California, Los Angeles. Formal legal training is one signal of substantive knowledge — the day-to-day practice Marc runs in California is where that training gets applied to real client questions.

Locations

Marc Kirby Callahan's office in Irvine

Marc's primary office is at 3161 Michelson Drive, Suite 800, Irvine, CA, 92612. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Jones Day

3161 Michelson Drive, Suite 800

Irvine, CA 92612

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Client feedback

Client reviews of Marc Kirby Callahan

Marc has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Marc Kirby Callahan — what to expect in your first consultation

Working with a new business attorney should feel structured. Here's how the first two conversations with Marc usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Marc charges for the initial consult. That fee is credited toward representation if you retain Marc's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Marc will tell you what matters and what doesn't.

Questions to ask a business attorney in Irvine, California

A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Marc

Marc discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Marc confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Marc's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Marc Kirby Callahan

  • How much does it cost to hire Marc for a business case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Marc walks through the likely range during the consult so there are no surprises.

  • Does Marc offer a free consultation?

    Marc charges for the initial consult; that fee is credited toward representation if you retain Marc's office. Some business attorneys offer free consults — check Marc's current terms during booking.

  • How long do business cases in California typically take?

    Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Marc gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Marc take my case if I'm outside Irvine?

    Marc is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Marc will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Marc?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Marc will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Marc accepting new business clients right now?

    Marc's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Business attorneys serving Irvine, Los Angeles and San Francisco in California

Marc handles business matters throughout California. Each city below is a direct link into the search page for verified business attorneys in that community.

More counsel

If Marc's intake is full or the fit isn't right, these business attorneys in Irvine handle similar matters. Every profile below is verified and open to consultations.