Trusted legal representation for personal, business, and cross-border matters.

Mayo Law advises clients across six core practice areas: U.S. and Canadian immigration (including E-2 investor visas, L-1, TN, H-1B, O-1, EB-1 through EB-5, PERM, family-based petitions, and Canadian citizenship including Bill C-3 matters); business and corporate law (incorporation, contracts, M&A, fractional general counsel); international and cross-border business; white-collar defense; regulatory compliance and risk management; and notary public services in both Ontario and New York.

Joseph Mayo holds a Master of Laws (LL.M.) from New York University School of Law and a Bachelor of Arts (B.A.) in law and a Master of Arts (M.A.) in business from Netanya Academic College, and is licensed to practice in both Ontario (Law Society of Ontario) and New York State (New York State Bar). He is a member of the American Bar Association and the Law Society of Ontario. This dual-jurisdiction licensure is the foundation of Mayo Law’s cross-border practice — clients with matters that span Canada and the United States can coordinate their legal work with one firm rather than retaining separate counsel in each jurisdiction.

Mayo Law is one firm with two offices, Toronto and New York, led by Joseph Mayo as principal attorney. Its Ontario practice is licensed under the Law Society of Ontario and its New York practice under the New York State Bar, which is what allows the firm to coordinate seamlessly on cross-border matters while maintaining proper licensing in each jurisdiction.

Yes. Mayo Law accepts new clients across all practice areas. The intake process typically begins with an initial consultation where we discuss your matter, scope of work, fee structure, and timeline. We do not accept matters outside our practice areas or jurisdictions of licensure, but we maintain a network of trusted counsel across other Canadian and U.S. jurisdictions for referrals where needed. Visit the contact page to schedule a consultation.

Most cross-border legal matters in Canada and the U.S. require clients to retain two separate law firms — one in each jurisdiction — and coordinate between them. Mayo Law’s dual licensure (Ontario and New York) allows clients with cross-border matters to work with one firm rather than two, reducing coordination overhead, conflicting advice, and total legal cost. The firm’s positioning is Toronto-first, cross-border when needed: most clients have their primary legal needs in Ontario, with U.S. work layered in when their business or family situation requires it.