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Aaron Grinhaus’ practice focuses on business law, tax and estate planning, including commercial transactions, corporate  reorganization, professional corporations and asset protection and securitization.

Mr. Grinhaus is also an experienced business, tax and Fintech consultant, who advises clients on Fintech strategies, including the use of Blockchain technology, smart contracts and cryptocurrency to reduce business costs, hedge institutional friction and expedite capital raises and cross-border wealth transfer transactions. He is a recognized Fintech expert, and is program director and faculty at Osgoode Hall Law School’s “Blockchains, Smart Contracts and the Law” Certificate program. He is also the author of the textbook “A Practical Guide to Smart Contracts and Blockchain Law” (LexisNexis: 2019).

Mr. Grinhaus frequently gives presentations on a variety of business, Fintech and tax law related topics and has acted as chair, presenter and lecturer through a number of organizations including the Ontario Bar Association (OBA), RBC Dominion Securities, Osgoode Hall Law School of York University and Michigan State University College of Law, among others. He is also heavily involved in the legal community having served on the Governing Council and several section executive boards of the OBA for over a decade and having served as Director and General Counsel for several not-for-profit and charitable organizations.

Mr. Grinhaus holds law degrees from the University of Ottawa (LL.B.), Michigan State University College of Law (J.D.) and a Masters in Tax Law from Osgoode Hall Law School of York University (LL.M.)


Marisa is a business, real estate and estates lawyer with a focus on estate structuring, real estate and corporate reorganizations.

Marisa’s experience encompasses a broad range of estates and commercial issues, including asset and share sale transactions, securitization, estate administration, asset protection and corporate structuring and reorganization. She also regularly advises clients on estates, trust and real estate structuring, and frequently engages in contract negotiation and contract drafting for her clients. Marisa’s experience allows her to identify problems in commercial and real estate transactions before they occur making her a valuable advisor to any real estate or commercial investor.

In the community Marisa has actively promoted access to legal services by designing and conducting conflict resolution workshops, conflict-coaching and mediation at the Small Claims Court in low-income areas of Toronto. Marisa has also volunteered her time with the Pro Bono Canada Family Law project.

Marisa is conversant in English, Cantonese and Mandarin, and is active in the Chinese community.

In her spare time, Marisa likes to try new activities, travel, snowboard and perform music.

Marisa obtained her J.D. from Osgoode Hall Law School of York University, and prior to that, a Bachelor of Commerce degree (B.Com.) from the University of British Columbia with a specialization in Transportation and Logistics.


Family Law Counsel, Practicing in Association

Matthew practices exclusively in Family Law. Matthew provides advice and represents his clients in all areas of family law, including divorce; parenting issues such as custody and access; financial issues related to the division of property and support; and child protection matters involved the children’s aid society. Matthew regularly attends court proceedings before the Superior Court of Justice in Toronto, Brampton and Newmarket, and before the Ontario Court of Justice in Toronto.


Intellectual Property Counsel, Practicing in Association

For 20 years, Edward A. Mancinelli has assisted entrepreneurs, innovators, content creators and health providers grow their businesses from the ground up. In both private practice and as in-house counsel, he has served his intellectual property (IP) clients in the areas of trademark, copyright, domain names, trade secret and patent matters, including the filing of applications, copyright and trademark clearance, IP enforcement and litigation matters, preparation of assignment and licensing transactions, IP acquisition and portfolio management and legal opinions. He also assists various health providers with health regulatory matters.

Prior to establishing his current practice, Edward worked as in-house IP counsel for a North American developer of early-stage technology and Internet companies. He is also active in the healthcare sector, volunteering for not-for-profit health organizations, boards and committees, and assisted to establish a publicly-funded interdisciplinary health clinic in the Greater Toronto Area.


Business Leases in the Time of Covid: What you Need to Know!

By Aaron Grinhaus and Alexander Di Giovanni Even with the “work from home revolution” caused by the Covid-19 pandemic, many businesses still need space for inventory, operations, retail facilities and for a plethora of other reasons. The Ontario Commercial Tenancies Act,...

Attention Ontario Realtors: You Can FINALLY Incorporate…and Here’s How!

By: Aaron Grinhaus and Alex Di Giovanni After a years-long lobbying effort, Ontario Realtors are FINALLY allowed to reap the tax and liability protection benefits of using a Personal Real Estate Corporation (PREC). On October 1, 2020, new regulations under...

What is “Decentralized Finance” and What are the Risks?

By: Aaron Grinhaus and Alex Di Giovanni Decentralized Finance (DeFi) refers to any financial activity, from applying for a loan to trading stocks, which is built using decentralized ledger technology. This is the same technology upon which Bitcoin and other...


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