Katsoolis + Co.

Katsoolis + Co.Katsoolis + Co.Katsoolis + Co.

Katsoolis + Co.

Katsoolis + Co.Katsoolis + Co.Katsoolis + Co.

Expert Criminal Defence Services Tailor-made for You

Expert Criminal Defence Services Tailor-made for YouExpert Criminal Defence Services Tailor-made for YouExpert Criminal Defence Services Tailor-made for You

Expert Criminal Defence Services Tailor-made for You

Expert Criminal Defence Services Tailor-made for YouExpert Criminal Defence Services Tailor-made for YouExpert Criminal Defence Services Tailor-made for You

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Katsoolis + Co. Solicitors + Attorneys

Ph: +61 2 9211 7107 Fx: +61 2 8331 6064 Mob: Peter Katsoolis - 0438 665 578 Email: peter@katsoolis.com Address: Suite 17, Level 6 91 Goulburn Street SYDNEY NSW 2000 AUSTRALIA

About Peter Katsoolis

Admitted to practice in 2001 after graduating from the University of New South Wales with the equivalent of First Class Honours, Peter Katsoolis is the principal of Katsoolis + Co. Solicitors + Attorneys, a Sydney-based firm specialising in complex and high-level criminal defence. While at UNSW, Peter received the Law Book Company Prize for Criminal Laws and the Minter Ellison Prize for Trial Process, confirming his commitment to criminal law and litigation. Before admission, he worked as a law clerk in most criminal jurisdictions, including the New South Wales Court of Criminal Appeal, gaining early and extensive courtroom experience. He later lectured at UNSW Law School in evidence, litigation, and criminal procedure, worked with one of Australia’s leading experts on evidence law on an early edition of Uniform Evidence Law, and served as the founding editor of the Australian Journal of Human Rights. Since admission, he has been published on human rights and sexual assault law and has delivered continuing legal education (CLE) papers for both the NSW and Australian Crime Commissions.


Since founding Katsoolis + Co. in 2004, Peter has personally managed every matter from start to finish. He has defended clients across the full spectrum of criminal charges — from murder and large-scale drug supply to white-collar and regulatory offences — at all court levels, including the High Court of Australia. Recognised in numerous media “Best Criminal Lawyer” lists, he and his firm are known not only for following precedent but for creating it. A finalist in the 2021 and 2022 Lawyers Weekly Australian Law Awards (Sole Practitioner of the Year), Peter has practised throughout New South Wales and across Australia, as well as internationally in Asia, the United States, and Europe.


Peter has recently expanded his expertise through further education in migration law, enabling him to advise on matters at the intersection of criminal and migration law — including visa cancellations, character concerns, and deportation issues arising from criminal convictions. His dual focus enables clients to receive strategic, integrated advice where these two areas intersect. Beyond criminal law, Peter has appeared in the Children’s Court, State Parole Authority, Coroner’s Court, Federal Court, and Mental Health Review Tribunal, and has represented clients before the Crime Commission, Law Enforcement Conduct Commission (LECC), and ICAC. His broader practice also includes family, employment, administrative, personal injury, intellectual property, and defamation law.


In complex and high-stakes litigation, Peter is recognised for his dedication and results. His professional reputation and proven record have earned him the trust of generations — including third-generation clients and regular referrals from both the Bench and the profession.

Our Cases

NSW Police v Damian McEachern

A Parramatta Local Court received fines for possessing six prohibited firearms; the outcome led to an enquiry by the NSW Attorney-General, resulting in, inter alia, significant revisions to the Firearms Act and an expansion of the Local Court's sentencing capacity to up to 5 years.

In R v Shi [2004] NSWCCA 135

Large Commercial Quantity drug supply; sentencing judge found that the unusually high level of purity of the drug methylamphetamine — 84.5% — was an aggravating factor under s 21A(2)(i) of the Crimes (Sentencing Procedure) Act 1999, as it had considerable destructive potential and the offence was accordingly one committed without regard for public safety.

Katherine Knight v Regina [2006] NSWCCA 29

Katherine Knight appealed her life sentence for the murder of her partner, John Price, arguing it was manifestly excessive. The Court upheld the life sentence without parole, making Knight the first Australian woman to receive this penalty. The case remains a key precedent on life sentences for the most serious offences.

R v Koloamatangi [2011] NSW CCA 288

This case considered the role of Standard Non-Parole Periods (SNPPs) under the Crimes (Sentencing Procedure) Act 1999. The Court held that SNPPs cannot have determinative significance in sentencing. However, a sentencing judge must take them into account as a “marker”, even if there are reasons why the SNPP may not be strictly applied in the case at hand. The decision offers valuable guidance on striking a balance between statutory sentencing frameworks and judicial discretion. Precedent for post­ Muldrock approach to sentencing for SNPP offences.

Chidiac v The Queen [2016] HCA HCASL 269

Special leave was ultimately refused, but the matter reached the High Court of Australia for the second time following a successful post-curial enquiry.

CDPP v Benjamin Gillette-Rothschild [2018] NSW DC

A client was charged with producing $1 million in counterfeit $50 notes. The matter was successfully defended, achieving an excellent outcome. Details of how the counterfeit notes were produced remain suppressed to protect the integrity of the Reserve Bank of Australia’s processes.

Koloamatangi v R [2020] NSWCCA 52

Convicted by a jury of murder, successful appeal to the NSW CCA, retried and convicted again. The New South Wales Court of Criminal Appeal overturned the murder convictions of Koloamatangi because the jury's verdict was deemed unreasonable given the evidence. The court found reasonable doubt about the applicants' guilt and allowed the appeal, quashing the conviction.

Rogerson v R [2021] NSW CCA 160

A ground of appeal was upheld, but the Court of Criminal Appeal ultimately exercised the proviso, leaving the original conviction intact.

Nikolovski v R [2021] NSW CCA 327

Successful murder appeal - acquitted by the NSW CCA. The Court (Payne JA, Lonergan J agreeing, Fullerton J dissenting on ground 2) held, granting leave to appeal, allowing the appeal, quashing the conviction and entering a verdict of acquittal:

Saunders & Yorke [2022] FedCFamC1A 54

Controversial family law case on behalf of the Applicant mother upheld on appeal; attracted significant media publicity.

Rogerson v The King [2023]

Special leave was refused, but the client has appeared before the High Court of Australia twice in their lifetime, on separate matters.

Our clients speak for us

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