Michael J. Diamondstein

“I hate to lose, and fighting for people is what I do. I like to tell people there’s no guarantee we’ll win. But I do guarantee if there’s any way out, any way for me to mitigate their harm, I will find it and won’t stop working for them until I do.”

When you feel the intense heat of a Government investigation or you have been charged with a crime, you need a lawyer who is not afraid to stand up for you. You need a lawyer who has been there. Michael J. Diamondstein has been there for athletes, politicians, police officers and everyday working Americans.

Mr. Diamondstein is a member of the Pennsylvania, New Jersey and federal Bars who has handled tens of thousands criminal cases in state and federal courts throughout the United States. He has defended high-profile, media-sensitive cases as well as serious but unreported criminal cases. He has secured acquittals and dismissals for hundreds and hundreds of his previous clients. He is well respected in the legal community as he routinely represents clients who have been referred to him by judges, prosecutors, law enforcement officers and fellow attorneys.

When an individual faces the “soul-crushing pressure” of a state or federal investigation, criminal defense attorney Michael J. Diamondstein stands ready to step in.

Mr. Diamondstein’s vast experience and demonstrated skill have led him to be named to Super Lawyers since 2011, and he has received the highest AV Preeminent® rating from Martindale-Hubbell. He is also qualified to handle death penalty cases under Pennsylvania Rule 801. Mr. Diamondstein is often asked to lecture to other lawyers at legal education seminars. This same level of experience and skill enables him to provide the highest standard of representation for anyone accused of crimes, under investigation or recently arrested.

Michael J. Diamondstein is a lifelong resident of the Philadelphia metropolitan area. A graduate of Ithaca College, Mr. Diamondstein attended Widener University School of Law, from which he graduated summa cum laude.

Honors and Awards

  • Selected to Super Lawyers in the Criminal field, every year since 2011
  • AV Preeminent® Rated by Martindale-Hubbel in Legal Ability and Ethical Standards, every year since 2017
  • Profiled as a 5 star attorney by Surburban Life Magazine, 2019
  • Gave the Commencement Address to a number of the members of the graduating class of the University of Wisconsin, Class of 2020 who were quarantined in Lower Merion at their ad hoc graduation ceremony due to COVID-19 pandemic, Unofficial Commencement Speaker, University of Wisconsin, Class of 2020, “Lower Merion Division”, 2020
  • Received American Jurisprudence Awards and Certificate of Achievements in Criminal Procedure, Constitutional Law, Secured Transactions, Capital Punishment, Professional Responsibility and Wills and Trusts
  • Wolcott Fellowship, Widener University School of Law
  • Awarded William I. Schaffer and Emily N. Maxwell Memorial Scholarships
  • Serves as a Judge of Elections for Montgomery County, Pennsylvania

Scholarly Lectures/Writings

  • Instructor for Pennsylvania Bar Association CLE courses
  • Instructor, National Institute of Trial Advocacy
  • Expert Witness in the field of Criminal Defense
  • Provided attorneys with an update on the status of Montgomery County, Bucks County, Delaware County, Chester County and the federal courts during the COVID-19 pandemic., Presenter, Four County Criminal Practice Update, Philadelphia Bar Association, 2020
  • Cloaked in Doubt, 2006
    Instructor, NITA Program, Hofstra University School of Law, January, 2000
  • Judge, Regional Trial Competition, Temple University School of Law, February 2003 – Present
  • Instructor, Continuing Legal Educations Courses for Pennsylvania Bar Institute, 2009 – Present
  • On January 12th, 2017 Mr. Diamondstein was a panelist with Louis Lappen, Acting US Attorney for the Eastern District of PA and The Honorable Luis Felipe Restrepo of the Third Circuit Court of Appeals for a CLE course for criminal attorneys and prosecutors.  The topic was the difference between State and Federal Prosecutions with respect to coopeartors., Lecturer, CLE, Philadelphia Inn of Criminal Courts, 2017
  • On June 10th, 2017 Mr. Diamondstein spoke to the Arkansas Association of Criminal Defense Lawyers on the topic of How to Handle a High Profile Case at their summer meeting in Bossier City, Louisanna., Speaker, How to Handle a High Profile Case, 2017
  • Intensive Trial Advocacy Program, Instructor, Widener University School Of Law, 2017
  • Lecturer on Attorney Civility in the Courts, Lecturer, Philadelphia Inn Of Criminal Courts, 2018
Notable Cases

Pretrial Intervention Program That Accepted Ray Rice Is Rarely Granted

We were concerned that Mr. Rice would be treated more harshly because of his celebrity status. We are thankful that he was not. We are thankful that he was given the same treatment as anyone else in a similar situation.

- Michael J. Diamondstein
Baltimore Ravens running back Ray Rice will be allowed to enter a program to avoid prosecution in an alleged assault of his now-wife. Upon successful completion of the program — which will be a minimum of one year — the third-degree charge of aggravated assault causing serious bodily injury would be dismissed. The arrest would remain on his record, but with no conviction.
Pretrial Intervention Program That Accepted Ray Rice Is Rarely Granted
Notable Cases

Satellite Startup Execs Accused of Fraud and Tax Evasion

“He [Gallagher] is a patriot, and we intend to vigorously defend his good name.” 

- Michael Diamondstein
John Gallagher, founder of Gallagher Law in Philadelphia, has been indicted in federal court alongside other executives associated with aerospace startup Theia Group Inc. The indictment alleges involvement in a scheme where Theia falsely claimed plans to launch over 100 satellites for global surveillance, raising more than $250 million through fraudulent means. Gallagher, who served on Theia's board and as an executive vice president, is specifically accused of aiding founder Erlend Olson in financial misconduct and tax evasion activities. Gallagher, who specializes in space and satellite technology law, denies wrongdoing and intends to vigorously defend against these charges.
Satellite Startup Execs Accused of Fraud and Tax  Evasion
Notable Cases

Pennsylvania and Maryland Prosecutors Drop Child Sex Abuse Cases After Diamondstein Cross Examination

“Michael Diamondstein is the best lawyer on Earth. He saved my life.”

- DT
DT had spent three years in jail and was facing lifetimes more for multiple counts of child rape in Pennsylvania and Maryland. But Michael Diamondstein’s thorough investigation and strategic cross-examination forced prosecutors to withdraw their case mid-jury trial.
Pennsylvania and Maryland Prosecutors Drop Child Sex Abuse Cases After Diamondstein Cross Examination
Notable Cases

Life Sentence Vacated After Decades in Prison

“The district attorney recognized the inequities in the case and we are thankful for the compassion and justice they decided was appropriate.”

- Michael Diamondstein
Mark Young had been serving a life sentence for what prosecutors say was his role as a coconspirator in a 1974 bar robbery that ended in the shooting death of a patron. The 67-year-old Young, who maintained his innocence for almost 50 years, is now slated to be released from prison after a negotiated guilty plea. The judge vacated Young’s previous conviction and sentence.
Life Sentence Vacated After Decades in Prison
Notable Cases

Michael J. Diamondstein Secures Client’s Release from Pennsylvania Prison after 37 Years

He took his first free breaths this afternoon after almost 40 years, and he is very happy and humbled.

- Michael J. Diamondstein
Willie Stokes's release comes after the U.S. District Court for the Eastern District of Pennsylvania vacated his murder conviction, concluding that the state violated Stokes's constitutional rights by "withholding" crucial evidence about the false testimony of a key witness in the case, according to court documents.
Michael J. Diamondstein Secures Client’s Release from Pennsylvania Prison after 37 Years
Notable Cases

Diamondstein Prevails on Murder Charge for Rapper

Mr. Diamondstein saved my life. He is the best there is.

- Monte Small Atwell aka Benjy
Despite that fact that multiple videos showed local rap singer, Monte Small Atwell aka Benjy killing the decedent, a Philadelphia jury found Mr. Atwell Not Guilty of Murder. The video clearly showed that the unarmed decedent was chasing Mr. Atwell. Mr. Atwell’s attorney, Michael Diamondstein litigated a very effective self-defense case. After a number of withering cross examinations and a closing wherein Mr. Diamondstein exhorted the jurors that his client “would rather be judged by 12 than carried by 6” the jury agreed that Mr. Atwell’s actions were justified.
Diamondstein Prevails on Murder Charge for Rapper
Notable Cases

Six Narcotics Officers Acquitted in Federal Corruption Trial

The things that were said about these honorable men and police officers over the last eight to 10 months were ridiculous. A lot of people in this city owe these heroes an apology.

- Michael J. Diamondstein
Six members of an elite Philadelphia narcotics squad were acquitted of federal corruption charges – a verdict the men described as “vindication” after nearly a decade of federal scrutiny surrounding their conduct. A jury of six men and six women took 5 1/2 days to reject prosecutors’ arguments that former Officers Thomas Liciardello, Brian Reynolds, Michael Spicer, Perry Betts, Linwood Norman, and John Speiser routinely beat and robbed drug suspects during their time as members of the Narcotics Field Unit.
Six Narcotics Officers Acquitted in Federal Corruption Trial
Notable Cases

DA Seth Williams, in Federal Court, Pleads Not Guilty to Corruption Charges

This indictment is 24 hours old and yet too many politicians and commentators have already tried and convicted Seth Williams in the media. Simply because the government makes explosive allegations in a complaint doesn’t mean they’re going to prove it in a court of law.

- Michael J. Diamondstein
Philadelphia District Attorney Seth Williams pleaded not guilty to 23 counts of fraud, extortion, and bribery-related charges. But the problems of the city’s cash-strapped top prosecutor continued to mount outside the courtroom, a day after federal authorities accused him of repeatedly selling his influence to wealthy benefactors willing to bankroll his luxury tastes.
DA Seth Williams, in Federal Court, Pleads Not Guilty to Corruption Charges
Notable Cases

When Your Freedom Is at Stake, You Need a Tenacious Litigator

The man gave me my life back.

- Yusef Bey
It's 8:00 on a September morning but Michael Diamonstein has already been in his office for hours. A criminal defense lawyer, Diamondstein likes to be prepared before he goes to court. That preparation paid off to get an innocent man cleared of all charges.
When Your Freedom Is at Stake, You Need a Tenacious Litigator
Notable Cases

DA’s Office Drops Murder Charges in North Philly Shooting

Tremendous day, not only for Mr. Hill but for the entire Philadelphia justice system.

- Michael J. Diamondstein
With evidence missing and the investigation tainted by the involvement of a detective who pleaded guilty to impeding justice, the District Attorney’s Office has withdrawn murder charges against a 28-year-old man, Dante Hill, in a 2011 shooting outside a North Philadelphia sports bar.
DA’s Office Drops Murder Charges in North Philly Shooting
Notable Cases

Exclusive: Claire Risoldi to Pay Less for Insurance Fraud Scheme, Still Hopes to Avoid Jail Time

Diamondstein added that Berks County Senior Judge Stephen Lieberman, who is now overseeing the case, has authority to reconsider the sentence made by the previous judge, who retired last year.

Michael Diamondstein argued the original jail sentence is illegal because the previous judge assigned the case failed to address if Risoldi was eligible for re-entry, which would allow her to be released from jail early.
Exclusive: Claire Risoldi to Pay Less for Insurance Fraud Scheme, Still Hopes to Avoid Jail Time