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Peter Matthew Kooshoian

Personal injury Attorney at Buffalo, NY

5.0   5 reviews
  • Licensed for 22 years
    State NY
    Acquired 2002
    Currently Registered No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Peter

Learn Peter’s areas of practice.

Peter Kooshoian is a lifelong resident of Buffalo, New York.  He attended Canisius High School and then the University of Dayton, Ohio where he was a member of the History Honors Society.  He attended the University of Buffalo Law School and competed as a member of the school’s trial team receiving the Robert J. Connelly Award for excellence in trial advocacy.

During law school, Mr. Kooshoian also worked for the City of Buffalo Corporation Counsel’s Office.  During his employment at the Corporation Counsel’s Office, Mr. Kooshoian worked in the litigation department.  He assisted in the representation of numerous police officers and other first responders in all areas of litigation.

Following law school, Mr. Kooshoian joined the Erie County District Attorney’s Office where he continued to work with police officers and other first responders on a daily basis.  Mr. Kooshoian worked in the Felony Trial Bureau and successfully tried numerous felony-level cases to verdict.  Mr. Kooshoian also remained involved with the University of Buffalo Law School as a Trial Team Coach where he taught law students trial advocacy skills.

After leaving the District Attorney’s Office, Mr. Kooshoian joined the law firm Rosenthal, Siegel & Muenkel, LLP and continued to concentrate on trial work representing the seriously injured as well as those charged in State and Federal Court.  Mr. Kooshoian has recovered millions of dollars in verdicts and settlements on behalf of his clients.  Mr. Kooshoian has also continued to advocate on behalf of first responders obtaining substantial recoveries for those injured in the line of duty as a result of another’s negligence.

Mr. Kooshoian is well respected throughout the community and receives many referrals from fellow attorneys and former clients.  He is personally involved in each client’s case and is always available.  Mr. Kooshoian understands the difficulties that can result from a serious injury and often travels to see clients throughout Western New York.

Mr. Kooshoian is admitted to practice law in both State and Federal Court.  He is also a member of the Erie County Bar Association, Western New York Trial Lawyers Association, New York State Bar Association and Buffalo School Board Ethics Committee.  Mr. Kooshoian has successfully argued cases at both the Trial and Appellate levels. 

Mr. Kooshoian offers free consultations to all of his clients and, as is customary throughout New York State, does not charge any fee for personal injury matters unless there is a recovery.  Please contact Mr. Kooshoian with any questions or comments.


Rosenthal, Kooshoian & Lennon, LLP
80 W. Huron Street
Buffalo, NY, 14202

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5.0 / 5.0
  5 customer reviews
5 Star
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1 Star
Posted by Mike d. | February 2, 2019
This review is from a person who hired this attorney.
| Hired Attorney
This lawyer, though he has a down to personality, is on top of his practice and knows the law. Ive used him several times and the result has always been the same. Top notch and fairly priced.
Posted by Cary | July 13, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Listens to your concerns and very knowledgeable great guy great attorney i would give Peter 10 stars he puts your concerns at ease and gets the job done
Posted by anonymous | December 14, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Very pleased
Peter Kooshoian represented a family member in a criminal matter that was somewhat complex and achieved the best possible outcome in a local court which has a reputation for being quite difficult. We would recommend him to anyone needing to be represented and although we hope to never need such services again, we would not hesitate to hire him should the need arise.
Read less
Posted by anonymous | September 15, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Great Lawyer
Peter Kooshoian represented me in a car accident. I suffered multiple fractures but the insurance company claimed their insured wasn't responsible. Peter got me a $1.36 million jury verdict.
Posted by anonymous | August 4, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Best personal injury lawyer in Buffalo
I was severely injured in a construction accident and Peter Kooshoian fought for me resulting in compensation of over a million dollars.


  • Free Consultation 30 minutes
  • Contingency 33%-33%


AVVO RATING 8.7 (Excellent)

Work Experience

  • Owner
  • Rosenthal Kooshoian & Lennon LLP
  • 2006 - Present
  • Assistant District Attorney
  • Erie County District Attorney's Office
  • 2002 - 2006
  • Associate Attorney
  • Block & Colucci
  • 2001 - 2002
  • Trial Team Coach
  • State University Of New York Buffalo Law School
  • 2001 - 2006
  • Law Clerk
  • City of Buffalo Corporation Counsel
  • 1999 - 2001
View all work experience


  • State University of New York at Buffalo
  • JD - Juris Doctor
  • 2001
  • University of Dayton
  • BA - Bachelor of Arts
  • 1997
  • Canisius High School
  • 1993

Sample of Legal Cases

  • Oleksy V Korth et. al.
  • 4.4 Million Dollars
  • People V Corey Staples
  • Acquittal By Jury
  • Weston V Muniak & DeLuca
  • Jury Verdict 1.36 Million Dollars


  • Bar Association of Erie County
  • Director
  • 2017 - Present
  • Buffalo School Board Ethics Committee
  • Member
  • 2014 - Present
  • Bar Association of Erie County
  • Member
  • 2006 - Present
  • New York State Bar Association
  • Member
  • 2006 - Present
  • Western New York Trial Lawyers Association
  • Member
  • 2006 - Present
  • Erie County Charter Revision Commission
  • Member
  • 2016 - 2017
  • Erie County Bar Association Justice Court Committee
  • Member
  • 2015 - 2016
View all associations

Languages Spoken

  • English

Honors and Awards

  • Robert J Connelly Award for Excellence In Trial Advocacy
  • State University of New York at Buffalo School of Law
  • N/A


  • Mckinney's
  • Dodge vs. Eerie County
  • 2017
  • Basics of Handling An AutoAccident Case
  • Ethical Issues Related To Automobile Litigation
  • 2012
  • Buffalo News
  • Jury Acquits man 19, in home invasion, robbery
  • 2009
  • Buffalo News
  • 1.36 Million awarded to woman hurt in crash
  • 2008
View all publications

Speaking Engagements

  • Basics Of Handling An Auto Accident
  • Ethical Issues Related To Automobile Litigation
  • 2012
  • Criminal Records and Collateral Consequences
  • Criminal Records Reputation Evidence and Collateral Consequences
  • 2007
  • Stop DWI Program
  • Driving While Intoxicated
  • 2006

Attorney endorsements

Received (3)
Given (1)
Endorse Peter
Litigation Attorney | May 16
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Personal injury Attorney | Sep 19
Relationship: Co-worker
"Pete works hard to obtain the best results possible for his clients."
Personal injury Attorney | Sep 14
Relationship: Family member
"One of the absolute best. Exceptional attention to detail, service next to none. I endorse this lawyer."
Criminal defense

Avvo Contributions

This attorney hasn't created any legal answers in Q&A or legal guides recently on Avvo.

Buffalo Personal injury Lawyer Peter Matthew Kooshoian
Peter Matthew Kooshoian
Personal injury Attorney
Buffalo, NY
Licensed for 22 years
Free Consultation