A relative just died and I don't think their will is valid. Can Tupman & Bloom help me challenge it?

Will challenges are a core part of the firm's practice. It represents beneficiaries and other interested parties in disputes over capacity, undue influence, and improper execution, before courts in Ontario, Nova Scotia, and British Columbia.

An executor won't tell me what happened to my parent's estate. What can I do?

You can apply to compel a passing of accounts, which requires an executor or trustee to formally account for how they administered the estate. This is one of the firm's listed practice areas.

I'm worried a power of attorney is being misused. Does the firm handle that kind of dispute?

Yes. Power of attorney and guardianship litigation is a dedicated practice area, covering disputes among attorneys, family members, and others involved in a capacity matter.

My family's business is caught up in a dispute between the owners. Can Tupman & Bloom take that on?

Family business disputes are a listed practice area, and the firm notes this work often overlaps with estate and trust litigation when a business is passing between generations.

Do I need to be in Toronto to work with Tupman & Bloom?

No. The firm has offices in Toronto, Halifax, and Vancouver, and its lawyers are called to the bar in Ontario, Nova Scotia, New Brunswick, Newfoundland and Labrador, British Columbia, and Alberta.

I lost at trial in an estate dispute. Can the firm handle an appeal?

Appellate advocacy is a dedicated practice area. The firm says it appears before all levels of court in Ontario, Nova Scotia, and British Columbia, including appeals arising out of estate and trust litigation.

Tupman & Bloom LLP | LawOnline Directory

About Tupman & Bloom LLP

Tupman & Bloom LLP is a litigation firm founded in Toronto in 2018 by Lionel J. Tupman and Arieh Bloom, who had worked together earlier in their careers at Whaley Estate Litigation Partners. The firm's head office is in the Sterling Tower at 372 Bay Street, and it also keeps offices in Halifax and Vancouver. Its lawyers are called to the bar across Ontario, Nova Scotia, New Brunswick, Newfoundland and Labrador, British Columbia, and Alberta, which lets the firm act in estate and trust disputes in most provinces without bringing in local counsel.

The practice concentrates on will challenges, capacity and power of attorney disputes, and passing of accounts, along with related civil and appellate litigation and disputes among family business owners. Before turning to law, Bloom worked as a Certified Public Accountant at KPMG and clerked for justices of the Ontario Superior Court of Justice. Counsel Debra Stephens, who joined the firm in 2019, previously practiced at WEL Partners, the same Toronto estate litigation firm where Tupman and Bloom had worked together. Chambers Canada's High Net Worth guide has ranked the firm's estate and trust litigation practice in Toronto, and a member of its counsel has been listed in Best Lawyers in Canada for estates and trusts work every year since 2009.

Practice areas

Wills, Estates & Trusts

Civil Litigation & Dispute Resolution

Personal Injury

Administrative & Regulatory Law

Family Law

Class Actions

Business & Corporate Law

Milestones & recognition

Lionel J. Tupman and Arieh Bloom founded the firm in Toronto in 2018, after working together earlier at Whaley Estate Litigation Partners.
Debra Stephens joined the firm as counsel in 2019, bringing prior experience as counsel to the Office of the Children's Lawyer for Ontario and years in Toronto estate, trust, and capacity litigation.
Chambers and Partners' High Net Worth guide has ranked the firm's estate and trust litigation practice in Toronto.
A member of the firm's counsel has been listed in Best Lawyers in Canada for estates and trusts work every year since 2009 and received the Ontario Bar Association's 2021 award for excellence in estates and trusts law.
The firm's Halifax office is led by a partner called to the bar in Nova Scotia and New Brunswick, extending the estate litigation practice into Atlantic Canada.

In the community

Tupman and Bloom LLP is listed as a contributing organization to Steps to Justice, a public legal information project for Ontario, in its wills and powers of attorney section.
According to a 2019 profile in Law and Style, at least 10 percent of the firm's files were handled pro bono for charities, synagogues, and clients of modest means.

Good to know

Wheelchair accessible

Lawyers 13

Certified Specialists

A designation granted by the Law Society of Ontario, not a self-declared area of focus.

Arieh BloomCertified Public Accountant

This firm’s lawyers at a glance

Called to the bar: 1982–2016 · median 27 years in practice 2 of 13 lawyers
Law schools: Osgoode Hall Law School (5), Queen's University (2), Université de Moncton, University of Auckland, University of New Brunswick, University of Ottawa 11 of 13 lawyers
Languages on the roster: Arabic, Cantonese, English, French

Who handles what

Offices 3

Toronto647-497-7107

Sterling Tower Corporation, 372 Bay Street – Suite 2100, Toronto, ON, M5H 2W9, Canada

Halifax902-201-0354

Suite 1440, 1801 Hollis Street, Halifax, NS, B3J3N4, Canada

Vancouver778-653-1724

Regus MNP Tower, 1021 West Hastings Street, 9th Floor, Vancouver, BC, V6E 03C, Canada

The neighbourhood

The firm's head office is in the Sterling Tower at 372 Bay Street, on the stretch of Bay Street that has stood in for Canada's banking and corporate law industry since the bank towers went up downtown from the 1960s onward. It's a fitting address for a firm built entirely around courtroom and appellate work rather than a broader general practice.

Outside Toronto, the two offices differ in kind. The Halifax office on Hollis Street is staffed by a partner called to the bar in Nova Scotia and New Brunswick, along with associates admitted in Nova Scotia, giving Atlantic Canada its own resident litigation team. The Vancouver office, by contrast, is a Regus serviced suite in the MNP Tower on West Hastings Street, the kind of flexible office space a national practice uses to keep a real BC address and meeting room without a full standalone location.

Frequently asked questions

A relative just died and I don't think their will is valid. Can Tupman & Bloom help me challenge it?: Will challenges are a core part of the firm's practice. It represents beneficiaries and other interested parties in disputes over capacity, undue influence, and improper execution, before courts in Ontario, Nova Scotia, and British Columbia.
An executor won't tell me what happened to my parent's estate. What can I do?: You can apply to compel a passing of accounts, which requires an executor or trustee to formally account for how they administered the estate. This is one of the firm's listed practice areas.
I'm worried a power of attorney is being misused. Does the firm handle that kind of dispute?: Yes. Power of attorney and guardianship litigation is a dedicated practice area, covering disputes among attorneys, family members, and others involved in a capacity matter.
My family's business is caught up in a dispute between the owners. Can Tupman & Bloom take that on?: Family business disputes are a listed practice area, and the firm notes this work often overlaps with estate and trust litigation when a business is passing between generations.
Do I need to be in Toronto to work with Tupman & Bloom?: No. The firm has offices in Toronto, Halifax, and Vancouver, and its lawyers are called to the bar in Ontario, Nova Scotia, New Brunswick, Newfoundland and Labrador, British Columbia, and Alberta.
I lost at trial in an estate dispute. Can the firm handle an appeal?: Appellate advocacy is a dedicated practice area. The firm says it appears before all levels of court in Ontario, Nova Scotia, and British Columbia, including appeals arising out of estate and trust litigation.

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Listing compiled from the firm’s public website in September 2026. Verify licence status in the Law Society of Ontario directory ↗