Kathleen M. O'Sullivan, Appellate Attorney in Seattle, Washington
Over 28 years of legal practice · focused on Appellate, Class Action, and Litigation
PartneratPerkins Coie LLP
Seattle, WA
Practicing appellate in Seattle since 1998.
- 28+
- Years practicing
- 1
- Bar admission
Practices in
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Quick answer
Kathleen M. O'Sullivan is a partner based in Seattle, WA. The practice focuses on Appellate, Class Action, and Litigation. Kathleen has over 28 years of legal experience. Currently practicing at Perkins Coie LLP.
- Based in
- Seattle, WA
- Experience
- over 28 years
- Known for
- Appellate · Class Action · Litigation
- Handles Appellate, Class Action, and Litigation matters from Seattle, WA.
- Over 28 years of practice as a licensed attorney.
About Kathleen M. O'Sullivan: Kathleen M. O'Sullivan is a partner based in Seattle, WA. The practice focuses on Appellate, Class Action, and Litigation. Kathleen has over 28 years of legal experience. Currently practicing at Perkins Coie LLP.
Areas of practice
Legal matters Kathleen takes on
Kathleen concentrates on appellate, class action, and litigation. Each area below outlines the kind of case Kathleen handles, typical outcomes to expect, and how the intake process starts.
Appellate
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Class Action
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Litigation
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Appellate cases in Seattle, Washington
Kathleen takes appellate matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Kathleen agrees to represent you.
Class Action cases in Seattle, Washington
Kathleen takes class action matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Kathleen agrees to represent you.
Litigation cases in Seattle, Washington
Kathleen takes litigation matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Kathleen agrees to represent you.
Biography
Meet Kathleen M. O'Sullivan — appellate lawyer in Seattle
Kathleen M. O'Sullivan is a partner based in Seattle, WA. The practice focuses on Appellate, Class Action, and Litigation. Kathleen has over 28 years of legal experience. Currently practicing at Perkins Coie LLP.
Kathleen M. O'Sullivan is a lawyer practicing appellate, civil litigation, litigation and 1 other area of law. Kathleen received a B.A. degree from Yale University in 1991, and has been licensed for 28 years. Kathleen practices at Perkins Coie LLP in Seattle, WA.
Working with Kathleen on a appellate matter
Kathleen M. O'Sullivan is a lawyer practicing appellate, civil litigation, litigation and 1 other area of law. Kathleen received a B.A. degree from Yale University in 1991, and has been licensed for 28 years. Kathleen practices at Perkins Coie LLP in Seattle, WA.
Clients Kathleen works with
Kathleen reviews new inquiries case-by-case for appellate, class action, and litigation matters in Seattle and the surrounding Washington area.
Credentials
Education, bar admissions, and languages
Georgetown University Law Center
J.D. · 1996
Yale University
B.A. History · 1991
Jurisdictions
Kathleen's state bar admissions
Washington
1998 · ACTIVE
Kathleen studied at J.D. in Georgetown University Law Center and B.A. History in Yale University.
Law school and academic background
Kathleen completed J.D. in Georgetown University Law Center and B.A. History in Yale University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Kathleen runs in Washington is where that training gets applied to real client questions.
Locations
Kathleen M. O'Sullivan's office in Seattle
Kathleen's primary office is at 1201 Third Avenue, Suite 4900, Seattle, WA, 98101-3099. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Kathleen M. O'Sullivan
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Schedule your consultationHiring guide
How to hire Kathleen M. O'Sullivan — what to expect in your first consultation
Working with a new appellate attorney should feel structured. Here's how the first two conversations with Kathleen usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Kathleen charges for the initial consult. That fee is credited toward representation if you retain Kathleen'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; Kathleen will tell you what matters and what doesn't.
Questions to ask a appellate attorney in Seattle, Washington
A short list to run through before you commit: How many appellate 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 Kathleen
Kathleen discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in appellate practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every appellate 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. Kathleen confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Kathleen's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many appellate practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Kathleen M. O'Sullivan
How much does it cost to hire Kathleen for a appellate case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Kathleen walks through the likely range during the consult so there are no surprises.
Does Kathleen offer a free consultation?
Kathleen charges for the initial consult; that fee is credited toward representation if you retain Kathleen's office. Some appellate attorneys offer free consults — check Kathleen's current terms during booking.
How long do appellate cases in Washington typically take?
Simple appellate 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. Kathleen gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Kathleen take my case if I'm outside Seattle?
Kathleen is licensed in Washington. Matters governed by Washington law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Kathleen 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 Kathleen?
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. Kathleen will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Kathleen accepting new appellate clients right now?
Kathleen's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Appellate attorneys serving Seattle, Spokane and Tacoma in Washington
Kathleen handles appellate matters throughout Washington. Each city below is a direct link into the search page for verified appellate attorneys in that community.
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