John F. O'Brien

John F. O'Brien

also known as A.B.A. Advanced Legal Services

4.4
Rating: 3.0

Licensed for 39 years

Criminal defense Lawyer at Rockville, CT
Practice Areas: Criminal Defense, DUI & DWI, Sex Crime ... +4 more

15 Park Street, Rockville, CT

About John

Biography

Practice Areas

Fees and Rates

We have not found any cost information for this lawyer


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Licenses

Licensed in Connecticut for 39 years

State: Connecticut

Acquired: 1986

Active

Lawyer disciplined by state licensing authority in 2025

Location

John F. O'Brien

15 Park Street, Rockville, CT, 06066

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John F. O'Brien's Reviews

Avvo Review Score

4.4 /5.0

7 Client Reviews

5 star (6)
4 star (0)
3 star (0)
2 star (0)
1 star (1)

Posted by anonymous | December 14, 2023 | Hired Attorney

This review is from a person who hired this attorney.

WORKS IN FAVOR OF THE COURT “he has connections with”

Hello. I had Jon O’Brien out of Rockville, CT as an attorney for a matter that DID NOT HAPPEN. The girls filed a false police report , AND DESTROYED THE VIDEO EVIDENCE THAT PROVED MY INNOCENCE. Well!!! NOTHING. Was done. JON, after 2 YEARS OF CONTINUING THE CASE , JON SAID MY ONLY OPTION WAS TO TAKE ...MY AR OR DO JAIL TIME. When we stood in front of the JUDGE , and PROSECUTORS “he had connections with” JON MY ATTORNEY WAS ONLY ABLE TO TALK. HE READ OF THE POLICE REPORT. THAT IS ALL. !!!!!!??!? IN FRONT OF THE JUDGE !?? SHE THEN CONTINUED TO SCREAM AT ME. (Yes , the judge) AND SAID IF SHE EVER SEES ME HERE AGAIN IM GOING TO JAIL. I DID NOT HARM A SOUL MIND YOU. My charges had to do with me YELLING AFTER BEING BULLIED OUT OF THE REST OF MY CHANGE AT DUNKIN LOL. Jon is A JOKE ALONG WITH ROCKVILLE COURT. CORRUPTION AT ITS FINEST . I don’t recommend.

Posted by Robert | August 18, 2022 | Hired Attorney

This review is from a person who hired this attorney.

Above and Beyond Expectations

I found myself jammed up over a matter whereas a unusual series of events unfolded brining with it a breach of peace charge which on its own wouldn’t have been a huge concern to attempt to resolve on my own. However in my personal reality such breach of the peace domino effect triggering a violatio...n of probation based on the new arrest. After much deliberation on how to handle this matter in the best possible way , I couldn’t argue or deny the violation which is pretty straight forward and easy to deliberate on. Finally I called John’s office and spoke with his wife who in the process of screening my situation offered me some extremely personally beneficial advice I was grateful for , and that alone in a time in which just something small like that gave me some relief to have someone who seemed to actually attempting to help. Met with John that same evening with my father , and after understanding the situation to the fullest thst I perceived from my perspective we agreed to terms and in doing so required me to surrender myself at 9am for a violation of probation warrant that couldn’t get resolved any other way. When I had asked probably more questions then necessary to try to understand why it absolutely had to go down like that ;!’ He took the time to intelligently explain the process and understand why which even though I didn’t like made sense and I was more comforted in such understanding. When sitting in the bullpen (which had been a very long time ,over a decade) since I had done so , I would think reasonable feelings of anxiety , and discomfort start thjnking about the what ifs despite having no reason to realistically have to worry with Attorney O’Brien who I had previously had representing me to my satisfaction. Well this particular situation unfortunately seemed even worse then I would have even anticipated it. Once he got the files and came to sit and review them with me before arraignment. I expected an alternate viewpoint to mine for sure to be presented, but was not ready to hear such descriptive and vivid details describing my lack of compliance and situation. Despite this and very obviously didn’t sound good at all , he never seemed to show any reason to doubt his confidence that I would get released from court. And sure enough even thought it didn’t go exactly as planned the desired and promises result was executed jusf as promised. This even with navigating the sensitive obstacles that having defend coking at a surprise b unbeknownst to either of us going in to the day still ended with a above and beyond result I completely, & sincerely recommend strongly Attorney O’Brien for any case that you or any loved one happens to face in the Manchester Superior Court for sure , there is nobody I would even consider to have more experience navigating that courtroom with his years of experience , and familiarity with the right people to present your case with the best opportunity to be taken seriously. His rates are also extremely reasonable. Do yourself a favor du you value your freedom and give his office a call !!!!!!

Posted by Brittany | July 2, 2022 | Hired Attorney

This review is from a person who hired this attorney.

The absolute greatest!

John has been my representation more than a dozen times between , myself, family, friends and colleagues. He has been our attorney for criminal , motor vehicle, accident cases and just plain messes! John will treat you like family, answer the phone , explain better than any teacher and deliver on hi...s promises. Look no further. This man has better hands then Allstate !

Posted by January | March 19, 2022 | Hired Attorney

This review is from a person who hired this attorney.

Happy client

Attorney O'brien is not only an outstanding lawyer but he also builds a relationship with his clients. He made my Husband and I feel like we were family. With His hard work and determination he was able to get my Husband a reduced sentence. Attorney O'Brian prices are very affordable for any budget.... I highly recommend him. Thanks so very much for your dedication....

Posted by anonymous | June 4, 2021 | Consulted Attorney

This review is from a potential client who consulted with this attorney.

Quality lawyer with his clients' best interest in mind

Extremely nice, friendly, and helpful! I consulted with Attorney O'Brien over a legal matter. He met with me for close to an hour. Although he quoted a reasonable price if I needed to hire him, he provided me with all the information I needed to take care of my legal issues on my own successfully. I... would highly recommend that anyone facing legal issues consult and consider hiring him for representation.

See All Client Reviews

John F. O'Brien's Lawyer Endorsements

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Experience

Rating:  3.0 (Caution)

Professional misconduct

This lawyer was disciplined by a state licensing authority in 2025.

Conditions issued in CT, 2025

updated on 11/11/2025

A condition is a disciplinary order from the Statewide Grievance Committee that an attorney fulfill a condition within a certain time frame. If the attorney does not fulfill a condition in a timely manner, the Superior Court may also impose any condition necessary to protect the public.

Conditions issued in CT, 2023

updated on 10/03/2023

A condition is a disciplinary order from the Statewide Grievance Committee that an attorney fulfill a condition within a certain time frame. If the attorney does not fulfill a condition in a timely manner, the Superior Court may also impose any condition necessary to protect the public.

Reprimand issued in CT, 2005

updated on 02/03/2009

A reprimand is an order from the Statewide Grievance Committee after it has found that an attorney has engaged in ethical misconduct. If an attorney receives more than 3 reprimands in 5 years, a presentment must be filed against the attorney so the Superior Court can decide if more serious discipline should be ordered.

Conditions issued in CT, 2003

updated on 09/19/2014

A condition is a disciplinary order from the Statewide Grievance Committee that an attorney fulfill a condition within a certain time frame. If the attorney does not fulfill a condition in a timely manner, the Superior Court may also impose any condition necessary to protect the public.

Honors

2025

Distinguished, Martindale-Hubbell

2024

Distinguished, Martindale-Hubbell

2023

Distinguished, Martindale-Hubbell

2022

Distinguished, Martindale-Hubbell

2021

Distinguished, Martindale-Hubbell

2020

Rising Star, Super Lawyers

2020

Peer Review Rated, Martindale-Hubbell

2019

Distinguished, Martindale-Hubbell

2019

Peer Review Rated, Martindale-Hubbell

2019

Rising Star, Super Lawyers

2018

Rising Star, Super Lawyers

Work Experience

1975 - 1996

Retired Major, US Army Intelligence Officer

Associations

1990 - Present

National Association of Criminal Defense Attorneys

Member

Education

1986

Western New England College School of Law

JD - Juris Doctor

1977

University of Connecticut

MA - Masters

1975

University of Connecticut

BA - Bachelor of Arts

Languages

Spanish

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.

What determines Avvo Rating?
  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
  • Legal thought leadership Publications, speaking engagements
  • Discipline
    This lawyer was disciplined by a state licensing authority in 2025
    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