Civil Litigation & Business Disputes
Strategic advocacy on complex civil and commercial matters across Ontario courts, from early case assessment through trial and appeal.
View practice areaLitigation Counsel
Denis Grigoras
Denis Grigoras n. prop. [litigation & business counsel · called to the Ontario Bar]
Trial and appellate litigator combining civil litigation strategy with a corporate–commercial perspective. Focus on defamation, shareholder & oppression disputes, urgent commercial remedies, injurious falsehood, and reputation management.
Denis Grigoras represents clients in complex litigation and business disputes across Ontario. He brings broad courtroom experience to matters that demand careful strategy and decisive advocacy — from injunctions and urgent relief to full-trial advocacy before the Superior Court and Court of Appeal.
What I Do
Focus & Services
Defamation & Reputation Management
Anti-SLAPP motions, media strategy, and reputation-sensitive disputes for individuals and businesses where public statements cause serious harm.
View practice areaInjurious Falsehood
Claims for false commercial statements — slander of title, slander of quality, and online business falsehoods — that cause measurable economic loss.
View practice areaShareholder & Oppression Disputes
Remedies for unfair prejudice, governance breakdowns, and buy-out disputes under the Ontario Business Corporations Act.
View practice areaUrgent Commercial Remedies
Injunctions, preservation orders, and focused motions where timing is critical and delay causes irreparable commercial harm.
View practice areaAppellate Advocacy
Disciplined records, focused facta, and clear oral submissions before the Ontario Court of Appeal and Divisional Court.
View practice areaCounsel Profile
Ontario Bar 2007 Nevada Bar 2008
Denis combines rigorous litigation strategy with first-hand courtroom experience — representing businesses and individuals in matters where the stakes are too high for anything less.
Background
Denis is a multifaceted lawyer whose practice encompasses sophisticated commercial litigation, defamation claims, and complex business and real estate transactions. He regularly serves as lead counsel in significant litigation matters, combining strategic advocacy with skilled negotiation to structure and close commercial deals involving multiple parties and stakeholders.
Areas of Focus
Education & Admissions
B.A. (Hons) Western University, 2002
Joint J.D./LL.B. University of Detroit & University of Windsor, 2005
Ontario Bar Called 2007
State Bar of Nevada Admitted 2008
Experience
Representative
Work
- Anti-SLAPP
Fiddick's Nursing Home Limited v. Moore et al., [2024] O.J. No. 630
Counsel for defendants on a successful anti-SLAPP motion in a defamation action concerning tweets (original and reposted) and related newspaper comments.
- Cross-Border
Cross-border asset purchase litigation (Ontario & Missouri)
Counsel to Missouri-based LLCs defending Ontario claims alleging civil conspiracy, misrepresentation, and breach of the duty of honest and good-faith performance. Parallel Missouri proceedings raised forum non conveniens, which proved decisive.
- BIA / CPL
Bleck v. Stevenson, [2023] O.J. No. 765
Counsel on a family law motion successfully seeking a declaration that proceedings were a nullity, dismissal or stay under the Bankruptcy and Insolvency Act, and discharge of a certificate of pending litigation obtained ex parte.
- $47.5M
Land acquisition & hospital put option
Acted for a real estate development entity in a $47.5-million land acquisition, including negotiation of a put option to acquire a private hospital for $13 million.
- M&A
Transportation company asset sale
Acted for a Southwestern Ontario trucking company in its multi-million-dollar asset sale to a national logistics provider.
- SHA / Oppression
Founding shareholder & CEO: SHA governance dispute at specialized asset manager
Counsel to the founding shareholder and CEO of an established specialized private debt and alternative asset manager in a dispute between board factions over the scope of the client's management authority. One faction purported to act without a properly constituted board meeting, required notice, or a compliant vote under the governing shareholders agreement. The board action was challenged as void ab initio and constituting oppressive conduct. The matter was resolved on a pre-litigation basis.
- Oppression
Oppression application (energy & agricultural co-operative)
Defence of a longstanding agricultural and energy co-operative in an oppression application arising from a disputed commercial venture.
- Arbitration
Stay of solicitor's assessment (arbitration clause)
Obtained a stay of a solicitor's assessment due to a clause requiring fee disputes to be arbitrated under the ADR Chambers Regular Arbitration Rules.
- Privacy
Consolidation of privacy actions
Successfully argued a motion to consolidate two separate breach-of-privacy claims from different jurisdictions against common defendants, based on shared factual and legal issues.
- Defamation
Defamation arising from dismissal
Counsel in a defamation claim stemming from a disputed dismissal following allegations of sexual misconduct.
- Defamation
Defamation during municipal election
Counsel in a defamation claim arising from a contentious municipal election campaign.
- Consumer Protection
Services contract / liquidated damages dispute
Counsel to Michigan-based individuals in resolving a dispute with an Ontario company claiming liquidated damages. Matter involved a consumer "future performance agreement" under Ontario's Consumer Protection Act.
- Environmental
Crop damage: Environmental Protection Act claim
Counsel to a farming client in a nuisance and Environmental Protection Act claim against a neighbour whose herbicide use caused extensive crop damage.
- Personal Injury
Alleged disease transmission at professional wrestling event
Counsel to the defendant in a high-profile personal injury lawsuit involving allegations of disease transmission during a professional wrestling event.
- Tort
Fatality claim against intoxicated driver
Counsel to the family of a deceased individual in a civil claim against an intoxicated driver who was criminally convicted.
- Personal Injury
Zip-line injury settlement
Achieved a substantial settlement for a client injured in a ski-hill zip-lining accident. Issues centred on the enforceability of liability waivers.
- Consumer Protection
Failed international shipment (luxury vehicles)
Counsel to a client in a Consumer Protection Act claim against a shipper arising from the failed international shipment of luxury vehicles.
- Secured Debt
Promissory note / repayment dispute
Resolved a dispute concerning repayment of a significant loan secured by a promissory note issued by a publicly traded company.
- Nuisance
Neighbour dispute (nuisance)
Counsel to clients in a claim against neighbouring parties and others for actions constituting nuisance.
- Sensitive Claims
Historical abuse allegations
Counsel to clients facing sensitive, high-stakes allegations of historical sexual abuse.
- Media Strategy
High-profile media inquiries: government contract
Provided strategic counsel in responding to significant media scrutiny regarding a client's government contract.
Litigation Counsel
Serious disputes require counsel who combines strategy with courtroom experience.
Denis Grigoras acts for businesses and individuals in high-stakes commercial disputes, defamation and reputation matters, shareholder conflicts, and urgent applications. He gives direct advice on strategy, risk, and cost, and delivers focused advocacy when it counts.
- Commercial Litigation
- Defamation & Reputation
- Shareholder Disputes
- Urgent Relief
- Appeals
