Yes, under a different number. Ontario's former Rule 3.02 became Rule 4.2-1 of the Law Society of Ontario's Rules of Professional Conduct in October 2014, with the same test: marketing must be demonstrably true, accurate and verifiable, not misleading, and professional. Firm AEO drafts AI-answer content as if that test applies. The firm's ethics counsel makes the final call.
Firm AEO's Canadian rules guide mapped the Model Code and every province at once, and its case-result post covered the US disclaimer mechanics. This post is narrower: one Ontario rule, read against one content type, the short answer block that ChatGPT, Perplexity or a Google AI Overview lifts out of a firm's page. Firm AEO is a marketing company, not a law firm, and nothing here is legal advice.
- Ontario's former Rule 3.02 on marketing was renumbered when the Law Society of Ontario adopted Model Code numbering in October 2014. The same test now sits at Rule 4.2-1, with the definition of marketing at Rule 4.2-0.
- Law Society of Ontario Rule 4.2-1 requires marketing to be demonstrably true, accurate and verifiable, not misleading, confusing or deceptive, and consistent with a high standard of professionalism.
- Pew Research Center found that Google users clicked a link inside an AI summary in 1% of visits, so most readers see only the sentence an engine extracts, not the disclaimer elsewhere on the page.
- The current Ontario commentary names superlatives such as best, super and #1 as rankings that must be bona fide, which collides directly with the best-lawyer questions AI engines are asked.
Is Rule 3.02 still the Ontario marketing rule?
No, but its substance survived. The Law Society of Ontario, then the Law Society of Upper Canada, replaced its 2000 rules with Model Code numbering in October 2014. Old Rule 3.02(1) defined marketing and Rule 3.02(2) set the three-part test. Both texts now appear almost word for word at Rules 4.2-0 and 4.2-1, and the commentary has grown since.
The renumbering matters for AI visibility in a small way. Marketing articles, vendor pages and some engine answers still cite Rule 3.02, so a firm checking its own pages against the old number will miss commentary added after 2014. The comparison below is drawn from the archived pre-2014 rule and the current LSO text.
| Topic | Pre-October 2014 | Current LSO rule | What changed |
|---|---|---|---|
| Definition of marketing | Rule 3.02(1) | Rule 4.2-0 | Same wording: advertisements and similar communications, firm names, letterhead, business cards, logos |
| Three-part test | Rule 3.02(2) | Rule 4.2-1 | Now reads may market only if, rather than may market if |
| Past results and amounts recovered | Commentary (a) | Commentary [2](a) | Same requirement for an accompanying statement that results vary |
| Awards, rankings, superlatives | Not addressed directly | Commentary [3](e) and [5] | Must be bona fide; best, super and #1 treated as rankings |
| Licence identification | No equivalent | Rule 4.2-1.1 | All marketing materials must identify the licensee as a lawyer |
| Second opinion services | No equivalent | Rule 4.2-1.2 | Marketing second opinions is prohibited (amended February 2017) |
Does Rule 4.2-1 cover FAQ and answer content, or only advertisements?
Rule 4.2-0 says marketing includes advertisements and other similar communications in various media, plus firm names, letterhead, business cards and logos. The word includes signals the list is not closed. Whether a general legal-information page counts as marketing is a question for the firm's ethics counsel or the LSO practice management helpline, not for a marketing vendor.
Firm AEO's working assumption is cautious. A page that carries the firm's name, describes its services and invites contact is drafted to the Rule 4.2-1 standard, including FAQ pages and practice-area answer blocks. The demand side explains why this content is worth getting right: Clio's 2025 Legal Trends Report, covered by Canadian Lawyer, found more than half of consumers have used or would consider using AI to answer a legal question.
Why does AI extraction make the rule harder to meet?
Because the engine quotes a sentence, not the page. Pew Research Center's July 2025 study of 68,879 Google searches found users clicked a link inside the AI summary in only 1% of visits. A disclaimer in a footer, or two paragraphs below a result figure, is invisible to almost everyone who reads the extracted answer.
Ahrefs found in March 2026 that only about 38% of pages cited in Google AI Overviews rank in the top ten organic results. Any indexed page can be the one quoted, including an old blog post nobody has reviewed since it was written. The current Ontario commentary already asks for particular care in mass advertising, where there is little opportunity for reflection or context. Firm AEO reads an AI answer as the extreme case of that setting. That is an analogy, not a ruling.
Which answer-content patterns does the Ontario rule put at risk?
Most problems come from sentences that were acceptable inside a full page and become something else when quoted alone. The table pairs common AI-answer patterns with the rule text they touch and an illustrative safer draft. Each line is a drafting suggestion for counsel to review, not a determination that the original breaches the rule.
| Answer pattern | Rule text it touches | Risk when quoted alone | Illustrative safer draft |
|---|---|---|---|
| We recovered $1.2 million for a cyclist in Ottawa | Commentary [2](a) | Amount appears without the results-vary statement | One sentence carrying the amount and the statement that past results do not predict future results |
| Heading: Who is the best criminal defence lawyer in Toronto? | Commentary [2](b), [5] | Reads as a superiority claim | Heading: How do you choose a criminal defence lawyer in Toronto? |
| Our employment law specialists | Rule 4.3-1 | Specialist implies LSO certification | Use specialist only for LSO-certified lawyers; otherwise describe the practice |
| Named a top lawyer by a directory | Commentary [3](e), [5] | Ranking may not be bona fide or verifiable | Name the source and year, and only for a ranking with a reasonable evaluative process |
| Should I get a second opinion on my settlement offer? Call us | Rule 4.2-1.2 | Markets a second opinion service | Answer the general question without offering the service |
| We fight aggressively for every client | Commentary [2](d) | Implies aggression | Describe what the lawyer does in plain, verifiable terms |
Can an Ontario firm still put statistics in answer content?
Yes, if they are true and verifiable. The Princeton generative engine optimization study (Aggarwal et al., KDD 2024) found that adding statistics raised visibility in generative engine answers by roughly 22% to 41%. Third-party figures with a named source fit Rule 4.2-1(a) naturally, since demonstrably verifiable is the test.
The firm's own results are different. Commentary [2](a) treats an amount recovered or a success rate as potentially contravening the rule unless accompanied by a statement that past results are not necessarily indicative of future results. In extractable content, Firm AEO keeps that statement inside the same sentence as the figure, so no engine can quote one without the other.
How should an Ontario firm review answer content before it goes live?
Review each answer as if it were the only sentence a prospective client will ever see. The order below is the one Firm AEO uses for Ontario clients. Timings vary by page count, and every flagged item goes to the firm's ethics counsel, who makes the decision.
- 1. Replace any internal reference to Rule 3.02 with Rule 4.2-1 so reviewers read the current commentary.
- 2. Read every answer block and FAQ answer in isolation, with the heading, and nothing else on the page.
- 3. Flag any amount, success rate or case outcome that lacks the results-vary statement in the same sentence.
- 4. Flag best, top, leading, #1, super and similar words, including in headings phrased as user questions.
- 5. Check every award or ranking against Commentary [5]: genuine, evaluative, not paid for, and verifiable at the time of reference.
- 6. Confirm the page identifies the author as a licensed lawyer, which Rule 4.2-1.1 requires in all marketing materials.
- 7. Check AI-drafted text for facts the firm cannot verify, because demonstrably true applies to every sentence regardless of who or what wrote it.
Does the same test apply outside Ontario?
Largely, with provincial differences. The Federation of Law Societies of Canada Model Code uses the same demonstrably true, accurate and verifiable standard at Rule 4.2-1, and most provinces built on it. The Law Society of British Columbia sets its own wording at Rule 4.2-5, and Quebec's Code of ethics of advocates bans testimonials outright under article 145.
A firm with offices in more than one province should run the review above against each law society's text. Firm AEO's Canadian rules guide lists the provincial differences in one table, and the firm's counsel in each province makes the final determination.
Is Rule 3.02 still cited anywhere official?
Only in historical material. The Law Society of Ontario archives the rules in effect before October 1, 2014, where marketing sits at Rule 3.02. Current LSO conduct references use Section 4.2.
Does an AI engine misquoting a firm make the firm responsible?
Firm AEO cannot answer that, because it is a legal question for the firm's counsel. What a firm controls is the text on its own pages, so drafting each sentence to stand alone reduces the chance of a misleading extract.
Do paralegal firms in Ontario follow the same rule?
Licensed paralegals follow the separate Paralegal Rules of Conduct, which have their own marketing provisions. This post covers the lawyer rules only.
Can an Ontario firm answer the best-lawyer question at all?
A firm can publish a page that explains how to choose a lawyer for a matter type, and it can cite bona fide third-party rankings with source and year. Calling itself the best is the part the commentary restricts.
- 1.Law Society of Ontario, Rules of Professional Conduct, Chapter 4 (Section 4.2 Marketing)
- 2.Internet Archive snapshot of LSO Chapter 4, January 29, 2026
- 3.Law Society of Upper Canada, Rules of Professional Conduct, Rule 3 (pre-October 2014, archived)
- 4.Pew Research Center, Google users are less likely to click on links when an AI summary appears (July 22, 2025)
- 5.Ahrefs, AI Overview citations and top 10 rankings (March 2026)
- 6.Canadian Lawyer, Many legal clients have asked AI legal questions, Clio report
- 7.Aggarwal et al., GEO: Generative Engine Optimization (KDD 2024)
- 8.Federation of Law Societies of Canada, Model Code of Professional Conduct (2024)
- 9.Law Society of British Columbia, Code of Professional Conduct, Chapter 4
- 10.Code de déontologie des avocats (Quebec)
- 11.Canadian Lawyer, Marketing for law firms: some rules to consider (June 2024)