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John Patrick Keirnan

5.0
Rating: 8.3

Licensed for 44 years

Criminal defense Lawyer at Houston, TX
Practice Areas: Criminal Defense

917 Franklin St Ste 550, Houston, TX

About John

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Licenses

Licensed in Texas for 44 years

State: Texas

Acquired: 1981

Eligible to Practice in Texas

No misconduct found

Location

Law Offices of John Patrick Keirnan

917 Franklin St Ste 550, Houston, TX, 77002-1728

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John Patrick Keirnan's Reviews

Avvo Review Score

5.0 /5.0

1 Client Review

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Showing 1 - 1 of 1 review

Posted by Chris | March 02, 2016 | Hired Attorney

Excellent

Mr. Keirnan and Mr. Mercer are extremely professional and are great at their job. Hiring Mercer, Keirnan was the best decision I've ever made. Mr. Keirnan is a wordsmith and a silver-tongued genius who has a very special way of conveying his arguments in a manner that everyone can relate to immediate...ly. It's this, combined with his experience, hard work and professionalism that makes Mercer Keirnan an excellent choice.

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John Patrick Keirnan's Lawyer Endorsements

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Michael David Mercer headshot
Michael Mercer

Criminal defense lawyer | Dec 22

Relationship: Worked together on matter

"When I first started practicing law, John "Casey" Keirnan served as an incredible mentor to me, as well as many other lawyers over the past 35 years. In 2014, Casey was voted "Lawyer of the Year" by hundreds of fellow members of the Harris County Criminal Lawyers Associatiom. He has such an impressive knowledge of the law. Even more impressive is his ability to relate and to communicate with other people...an invaluable asset in the courtroom. Any aspiring lawyer who has the chance to watch Casey in trial should bring a pen and notepad because there is so much to learn."

Phillip Lawson Baker headshot
Phillip Baker

Criminal defense lawyer | Oct 28

Relationship: Co-worker

"Casey Keirnan taught me everything I know about trying a case. He was first my mentor and later my law partner for many years. During that time we handled thousands of cases and we were constantly in trial. Casey is the most persuasive speaker I have ever heard in trial. More importantly Casey is a great dad and raised two beautiful and intelligent daughters. One of whom know works with his firm as an investigator! How lucky for him and his clients. I endorse this great Houston trial lawyer."

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Michael David Mercer headshot
Michael Mercer

Criminal defense lawyer

Rosa Alexander Eliades headshot
Rosa Eliades

Criminal defense lawyer

Experience

Rating:  8.3 (Excellent)

Honors

2018

Peer Review Rated, Martindale-Hubbell

2016

Legal Elite, Business North Carolina

2015

Best Lawyer, Best Lawyers in America

2014

Lawyer of the Year, Harris County Criminal Lawyers Association

Education

1981

South Texas College of Law

Avvo Rating

Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.

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  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
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  • Discipline Disciplinary information may not be comprehensive, or updated. We recommend that you always check a lawyer's disciplinary status with their respective state bar association before hiring them.
Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution