John Rosen

John Rosen
Rosen & Company Barristers
Appellate, Criminal, White Collar Defence & Investigations

John Rosen, founder of the Toronto firm Rosen & Company Barristers, has defended more than 300 accused murderers over his more than 45 years as a criminal lawyer. He specializes in criminal cases, regulatory offences, professional disciplinary cases and appeals.

He received is L.L.B. from Osgoode Hall Law School in 1968 and was called to the Ontario bar in 1970.

Mr. Rosen is a member of a number of professional associations, including the Advocates' Society (where he twice served as director), the Criminal Lawyers’ Association (where he’s held a number of executive positions), the National Association of Criminal Defence Lawyers in the U.S. and the Canadian and American Bar Associations.

He is a recipient of the Law Society Medal from the Law Society of Ontario.

Mr. Rosen practises as a trial and appellate lawyer in the areas of criminal, regulatory and discipline law, representing a wide variety of clients, both individuals and corporations, in all levels of court in Ontario and at the Supreme Court of Canada. He has appeared in some of the most highly publicized and complex criminal cases in Canadian legal history, including the Paul Bernardo case.

Mr. Rosen has appeared as counsel in the United States Federal Court, the British Columbia Supreme Court, the B.C. Court of Appeal, and the Grand Court of the Cayman Islands.

He also provides legal services to indigent persons pro bono and under Legal Aid Ontario in selected cases, and volunteers with a number of non-government organizations.


John Rosen In The News
GOP pushing forward for Kavanaugh, accuser wants 'fairness'

WASHINGTON — Christine Blasey Ford may testify against Supreme Court nominee Brett Kavanaugh after all, her attorney said, breathing new life into the prospect of a ... Read more

Rosen's mentorship of young lawyers recognized with major CLA award

When Toronto criminal lawyer  John M. Rosen  started to practice after his call to the bar in 1970, mentorship was virtually unknown unless you were lucky enough to work ... Read more

CLA awards G. Arthur Martin Criminal Justice Medal to John Rosen

The Criminal Lawyers Association has awarded the prestigious G. Arthur Martin Criminal Justice Medal to John M. Rosen , noted criminal defence counsel and founder of Rosen & ... Read more

Rosen: SCC affirms counsel's right to 'fearless advocacy' in Groia case

The Supreme Court of Canada (SCC) has reaffirmed the right of counsel to engage in fearless advocacy by quashing a finding of professional misconduct against a lawyer, Toronto ... Read more

OCA ruling holds police accountable for their actions: Rosen

By upholding the attempted murder conviction of an officer who shot a dying teenager, the Ontario Court of Appeal  (OCA) has reinforced the principle that police must ... Read more

Bill C-75 problematic with many 'wrong-headed' reforms: Rosen

The federal government’s wide-ranging package of criminal justice reforms in Bill C-75  is fraught with serious problems that will do more harm than good, says Toronto ... Read more

Rosen: overhauling jury selection system 'misguided'

It would be foolish to overhaul jury selection laws in response to the high-profile acquittals of two white men in the deaths of indigenous individuals, Toronto criminal lawyer ... Read more

OCA decision highlights challenges of sexual assault cases

An Ontario Court of Appeal (OCA) decision that ordered a new trial in a “he-said, she-said” date-rape case is a thorough judgment that sets out the difficulty that ... Read more

Canada must investigate terrorist suspect

Before a British-Canadian man accused of joining ISIS in Syria is allowed to re-enter this country, a thorough investigation of his activities must be carried out by Canadian ... Read more

No free pass for suspected ISIS fighters returning to Canada: Rosen

The recent debate in Parliament between Prime Minister Justin Trudeau and Andrew Scheer, the Conservative leader, about what to do with Canadian citizens who return home after ... Read more

The complexities around the Harvey Weinstein scandal

With  investigations  into sexual assault allegations against Harvey Weinstein happening in several jurisdictions with multiple complainants in the United States and ... Read more

Onus on accused in murder cases to show cause for bail

The bail decision in the case of an Ontario neurosurgeon accused of killing his wife points to some of the misconceptions around bail in murder cases in Canada, says Toronto ... Read more

Resolution of crossbow case avoids consecutive sentences

TORONTO — A Toronto man was formally handed a life sentence Friday after pleading guilty to the so-called ``crossbow killings'' of his mother and two brothers last August. ... Read more

The trouble with technology and the courts

The cost associated with new technology and the speed at which change happens is partly to blame for Ontario’s judicial system not keeping up with advances, Toronto criminal ... Read more

SCC ruling in Cody clarifies the legal test for delay timelines

OTTAWA — The Supreme Court of Canada is standing by its groundbreaking decision on ensuring timely criminal trials. In a unanimous decision Friday, the court ruled that a ... Read more

The importance of mentoring, collegiality and co-operation: Rosen

In speaking at an upcoming event for counsel and judges, Toronto criminal lawyer  John Rosen  hopes to promote the importance of mentoring, camaraderie, and fostering ... Read more

AG's plan doesn't address 'systemic' court problems

Ontario’s Attorney General Yasir Naqvi's plan   to help more accused get bail and to keep weak cases from going to court doesn’t go far enough to ... Read more

Guilty plea, assisting police factored into man's sentencing

The 21-year-old man found guilty of manslaughter in the death of a Markham woman last year pleaded guilty and assisted police in the investigation, which were factors the judge ... Read more

Cartel cases face new scrutiny post-'Chocolate'

More than a year after the stay of proceedings in  R. v. Nestle Canada Inc ., — known as the  Chocolate case  as it involved criminal allegations of price ... Read more

Gruesome court cases can take toll on lawyers, jurors

By the time Shayne Lund's court case wrapped up this week, his lawyer had spent three years dealing with evidence relating to sex crimes against children and animals, wading ... Read more

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