Ranked #1 in St. Catharines
Based in Buffalo, 51 km away
62/100LFR Score
Ranked #1 because of its Google rating and practice area focus: 4.9★ from 114 Google reviews, listed on Google as “Patent attorney”.
Intellectual Property Lawyers in St. Catharines, ON: 2026 rankings
42 intellectual property lawyers ranked by LFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Highest LFR Score in St. Catharines: Law Office Of Vincent G. LoTempio PLLC, Patent Attorney, LFR Score 62/100; 4.9★ from 114 Google reviews.
- 12
Open 24 hours (per Google): Jonathan Mesiano-Crookston, lawyer, patent agent, and trademark agent, posts 24/7 hours; ranked #12 of 42.
- 8
Most-reviewed: Incorp Pro Inc., 427 Google reviews at 4.5★, the most of 42 ranked; ranked #8.
Rankings can't be bought. Lawyers can't pay to change their rank or score. How we rank
42 St. Catharines intellectual property lawyers are ranked here by LFR Score, from nine published factors. 2 are open 24/7, 5 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 42 rated law firms.
Top 10 intellectual property lawyers in St. Catharines at a glance
Ranked by our published LFR Score from public data, not by payment; a rank is not an endorsement or a prediction of results.
| Rank | Business | LFR Score | Google rating | Based in | Hours | Notable for |
|---|---|---|---|---|---|---|
| 1 | Law Office Of Vincent G. LoTempio PLLC, Patent Attorney | 62 | 4.9★ (114) | Buffalo, 51 km away | — | Top score |
| 2 | Stadler IP Law | 60 | 4.9★ (32) | Buffalo, 39 km away | — | — |
| 3 | Kloss Stenger & Gormley LLP Attorneys at Law | 58 | 4.2★ (31) | Buffalo, 43 km away | — | — |
| 4 | Canadian Intellectual Property Lawyer Trademark Agent | 57 | 5.0★ (6) | Oakville, 48 km away | Sat · Evenings | — |
| 5 | UIPatent Inc. | 57 | 4.9★ (14) | Toronto, 54 km away | — | — |
| 6 | Heer Law | Intellectual Property Lawyers, Patent Lawyers, Trademark Lawyers, Copyright Lawyers, Patent & Trademark Agents | 55 | 4.7★ (96) | Toronto, 54 km away | — | — |
| 7 | Holbeche Law. Intellectual Property. Patent & Trademark Lawyer Agent. IP & Copyright Lawyer | 54 | 5.0★ (3) | Oakville, 46 km away | — | — |
| 8 | Incorp Pro Inc. | 54 | 4.5★ (427) | Mississauga, 56 km away | Evenings | Most reviews |
| 9 | NuansPro Canada | 54 | 4.8★ (203) | Mississauga, 56 km away | Evenings | — |
| 10 | Chumak & Company LLP | 53 | 5.0★ (3) | Toronto, 56 km away | — | — |
All 42 intellectual property lawyers in St. Catharines, in rank order
Ordered by LFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by our published LFR Score from public data, not by payment; a rank is not an endorsement or a prediction of results.
Scores below: based on 7 of 9 factors; bar status and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Buffalo, 39 km away
60/100LFR ScoreRanked #2 because of its Google rating and practice area focus: 4.9★ from 32 Google reviews, listed on Google as “Patent attorney”.
Based in Buffalo, 43 km away
58/100LFR ScoreRanked #3 because of its Google rating and practice area focus: 4.2★ from 31 Google reviews, listed on Google as “Intellectual property registry”.
Based in Oakville, 48 km away
57/100LFR ScoreRanked #4 because of its Google rating and practice area focus: 5.0★ from 6 Google reviews, listed on Google as “Patent attorney”.
Based in Toronto, 54 km away
57/100LFR ScoreRanked #5 because of its Google rating and practice area focus: 4.9★ from 14 Google reviews, listed on Google as “Patent attorney”.
Based in Toronto, 54 km away
55/100LFR ScoreRanked #6 because of its Google rating and practice area focus: 4.7★ from 96 Google reviews, listed on Google as “Law firm”.
Based in Oakville, 46 km away
54/100LFR ScoreRanked #7 because of its Google rating and practice area focus: 5.0★ from 3 Google reviews, listed on Google as “Patent attorney”.
Based in Mississauga, 56 km away
54/100LFR ScoreRanked #8 because of its Google rating and review volume: 4.5★ from 427 Google reviews, the most in St. Catharines.
Based in Mississauga, 56 km away
54/100LFR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 203 Google reviews.
Based in Toronto, 56 km away
53/100LFR ScoreRanked #10 because of its Google rating and practice area focus: 5.0★ from 3 Google reviews, listed on Google as “Patent attorney”.
#11 Witmart
Based in Toronto, 54 km away
53/100LFR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 141 Google reviews.
Based in Toronto, 54 km away
53/100LFR ScoreRanked #12 because of its Google rating and practice area focus: 4.8★ from 17 Google reviews, listed on Google as “Law firm”.
Based in Markham, 75 km away
53/100LFR ScoreRanked #13 because of its Google rating and practice area focus: 4.9★ from 57 Google reviews, listed on Google as “Legal services”.
#14 SLC Law
Based in Mississauga, 57 km away
52/100LFR ScoreRanked #14 because of its Google rating and practice area focus: 5.0★ from 26 Google reviews, listed on Google as “Attorney”.
Based in North York, 73 km away
52/100LFR ScoreRanked #15 because of its Google rating and practice area focus: 5.0★ from 3 Google reviews, listed on Google as “Patent attorney”.
Based in Toronto, 59 km away
52/100LFR ScoreRanked #16 because of its Google rating and practice area focus: 5.0★ from 23 Google reviews, listed on Google as “Attorney”.
Based in Toronto, 54 km away
52/100LFR ScoreRanked #17 because of its Google rating and practice area focus: 4.2★ from 15 Google reviews, listed on Google as “Patent office”.
Based in East York, 62 km away
51/100LFR ScoreRanked #18 because of its Google rating and practice area focus: 4.2★ from 34 Google reviews, listed on Google as “Law firm”.
#19 Oziel Law
Based in Toronto, 57 km away
50/100LFR ScoreRanked #19 because of its Google rating and practice area focus: 5.0★ from 46 Google reviews, listed on Google as “Business attorney”.
#20 Marks & Ciraco
Based in Mississauga, 61 km away
49/100LFR ScoreRanked #20 because of its Google rating and practice area focus: 4.8★ from 48 Google reviews, listed on Google as “Attorney”.
Based in North York, 67 km away
49/100LFR ScoreRanked #21 because of its Google rating and review volume: 4.5★ from 95 Google reviews.
Based in Toronto, 61 km away
49/100LFR ScoreRanked #22 because of its Google rating and practice area focus: 5.0★ from 33 Google reviews, listed on Google as “Law firm”.
Based in Toronto, 55 km away
49/100LFR ScoreRanked #23 because of its Google rating and practice area focus: 4.7★ from 39 Google reviews, listed on Google as “Law firm”.
#24 Bozai Family Law
Based in Markham, 76 km away
49/100LFR ScoreRanked #24 because of its Google rating and practice area focus: 3.9★ from 36 Google reviews, listed on Google as “Criminal justice attorney”.
#25 BLAZE IP
Based in Ancaster, 32 km away
49/100LFR ScoreRanked #25 because of its Google rating and practice area focus: 4.8★ from 13 Google reviews, listed on Google as “Legal services”.
All 42 intellectual property lawyers
#1 to #25 are shown in full above. Here are #26 to #42, in LFR Score order; each links to its profile.
| Rank | Business | LFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Kloss Stenger & Gormley LLP Attorneys at Law | 48 | 5.0★ (19) | 54 km |
| 27 | Sander Law | 48 | 5.0★ (16) | 54 km |
| 28 | Cassels | 47 | 4.1★ (37) | 54 km |
| 29 | Baker Law Firm | 47 | 4.8★ (19) | 66 km |
| 30 | Hodgson Russ LLP | 47 | 3.7★ (26) | 44 km |
| 31 | Rajwans Lawyers | 47 | 4.7★ (12) | 57 km |
| 32 | Fasken | 47 | 3.7★ (37) | 54 km |
| 33 | Mehrabi Law Office | 47 | 4.4★ (25) | 67 km |
| 34 | Heydarian Law | 46 | 4.6★ (21) | 73 km |
| 35 | Miller Thomson LLP | 46 | 3.5★ (42) | 54 km |
| 36 | Borden Ladner Gervais LLP | 46 | 3.4★ (22) | 54 km |
| 37 | Riches, McKenzie & Herbert LLP | 46 | 4.6★ (9) | 57 km |
| 38 | Ridout & Maybee LLP | 45 | 5.0★ (6) | 55 km |
| 39 | Rowand LLP | 45 | 5.0★ (6) | 55 km |
| 40 | Ridout & Maybee LLP | 45 | 4.4★ (5) | 49 km |
| 41 | Trusiak Law | 45 | 4.0★ (4) | 47 km |
| 42 | Scarfone Hawkins LLP | Full Service Law Firm | 45 | 3.1★ (37) | 52 km |
Also serving St. Catharines
20 more intellectual property lawyers within 80 km that we can't rank yet: too few reviews, or a practice area we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Azatian Law Professional Corporation | 5.0★ (43) | In St. Catharines |
| Beresh Smith Professional Corporation | 4.5★ (27) | In St. Catharines |
| Campisi Law St. Catharines | 5.0★ (27) | In St. Catharines |
| Chown Cairns | 4.2★ (19) | In St. Catharines |
| Cootauco Law Office | 4.9★ (109) | In St. Catharines |
| Daniel & Partners LLP | 4.6★ (92) | In St. Catharines |
| Jean S. Beaton - Barrister & Solicitor | 4.9★ (36) | In St. Catharines |
| Jolanta Bula & Associates | 4.5★ (75) | In St. Catharines |
| Lancaster Chown & Welch LLP | 3.7★ (27) | In St. Catharines |
| Lequyer Nabuurs Law | 4.0★ (29) | In St. Catharines |
| Li Cheng Business & Real Estate Law | 4.8★ (21) | In St. Catharines |
| Lozano Law Professional Corporation | 4.7★ (26) | In St. Catharines |
| Murray & Associates LLP | 4.7★ (31) | In St. Catharines |
| Osborne Law Group | 4.8★ (36) | In St. Catharines |
| Petch Law (Angle Law) | 4.1★ (32) | In St. Catharines |
| Protomanni & Associates | 4.9★ (204) | In St. Catharines |
| Stewart House Teichgraf LLP | 4.2★ (19) | In St. Catharines |
| Stewart LPC | 5.0★ (20) | In St. Catharines |
| Suk Law Professional Corporation | 4.9★ (63) | In St. Catharines |
| Sullivan Mahoney LLP. | 4.0★ (60) | In St. Catharines |
How we ranked St. Catharines intellectual property lawyers
We scored 42 St. Catharines intellectual property lawyers on nine factors, weighted as shown. A law firm is ranked when its practice area is confirmed and it has 3 or more Google reviews or a claimed profile. A law firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Attorney advertising businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In St. Catharines data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Bar status | 10% | An active bar or law society record matched to a lawyer at the firm (not measured until a record source is loaded) | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly office hours, Saturday, Sunday, and phones answered 24/7 | Measured |
| Practice focus | 15% | How clearly the firm practises this area (its Google category and name) | Measured |
| Proximity | 5% | An office in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its Law Firms Ranked profile (free and paid earn the same) | Measured |
| Law Firms Ranked reviews | 10% | Verified client reviews collected by Law Firms Ranked: their rating and how many there are | Measured |
How to choose an intellectual property lawyer
- Check the lawyer’s status and any public discipline in the state bar or law society directory.
- Ask how many intellectual property law matters the lawyer handles each year, and who at the firm will do the work.
- Get the fee arrangement in writing: hourly, flat or contingency, and which costs are charged on top.
- Ask how and how often the firm will update you, and how fast it answers calls and emails.
- Read recent reviews for how the firm communicated and billed, not only for outcomes.
- For patents, check the lawyer is registered to practice before the patent office and has worked in your technical field.
- Meet more than one firm; many offer a short first consultation, sometimes free.
Questions to ask an intellectual property lawyer
- How would you approach a matter like mine, and what are the realistic options?
- How do you charge, and what will the total likely cost?
- Who will be my main contact, and how quickly do you reply?
- Are you registered with the patent office?
- Which official fees are not included in your fee?
- Is there any conflict of interest that would stop you representing me?
Terms explained
- Contingency fee
- A fee that is a share of the money recovered, paid only if there is a recovery. Common in injury cases; not allowed for criminal defense or for securing a divorce.
- Retainer
- Money paid up front and held in a trust account, which the lawyer draws on as fees are earned.
- Flat fee
- One set price for a defined piece of work, such as a will or an uncontested matter.
- Limited-scope representation
- Paying a lawyer for part of a matter only, such as reviewing documents or coaching for one hearing (also called unbundled services).
- Statute of limitations
- The deadline to file a lawsuit or charge. It differs by state or province and by type of claim.
- Good standing
- A lawyer’s status as active and eligible to practise with a state bar or law society.
- Law society
- The body that licenses and disciplines lawyers in a Canadian province or territory.
- Board certification
- Recognition in a field of law by a state program or an organisation accredited for that purpose. Lawyers may only claim it when they hold it, naming the certifying body.
- Attorney–client privilege
- The rule that keeps confidential communications between a client and lawyer, made for legal advice, out of court.
- Conflict check
- The search a firm runs before taking a matter to make sure it does not represent someone on the other side.
- Pro bono
- Legal work done for free, usually for people who cannot afford a lawyer.
- Legal aid
- Publicly funded legal help for people with low incomes, through legal aid offices, public defenders or provincial legal aid plans.
Intellectual property lawyers in St. Catharines: frequently asked questions
Which intellectual property lawyer has the highest LFR Score in St. Catharines?
By LFR Score, the highest-ranked intellectual property lawyer in St. Catharines, ON is Law Office Of Vincent G. LoTempio PLLC, Patent Attorney with an LFR Score of 62/100. It has 4.9★ from 114 Google reviews. Stadler IP Law (#2) and Kloss Stenger & Gormley LLP Attorneys at Law (#3) follow. We ranked 42 intellectual property lawyers on nine factors, last updated November 9, 2026.
How many intellectual property lawyers are there in St. Catharines?
LawFirmsRanked ranks 42 intellectual property lawyers serving St. Catharines, ON. Another 20 within 80 km are listed but not ranked yet. Counts are as of November 2026.
Which intellectual property lawyers in St. Catharines are open 24/7?
2 ranked intellectual property lawyers in St. Catharines post 24/7 hours. The highest-ranked are Jonathan Mesiano-Crookston, lawyer, patent agent, and trademark agent (#12) and Innovative Licensing & Promotion, Inc. (#17). Hours come from each law firm's Google listing as of November 2026, so call to confirm.
Which intellectual property lawyers in St. Catharines work on weekends?
5 of 42 ranked intellectual property lawyers post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Canadian Intellectual Property Lawyer Trademark Agent (#4), Jonathan Mesiano-Crookston, lawyer, patent agent, and trademark agent (#12) and SLC Law (#14). Posted hours are office hours; many firms meet clients by appointment outside them.
What Google rating do St. Catharines intellectual property lawyers have?
The median Google rating among 42 rated intellectual property lawyers in St. Catharines is 4.8★, with a median of 26 reviews. Incorp Pro Inc. has the most, 427 reviews, and ranks #8. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does LawFirmsRanked rank intellectual property lawyers?
Each intellectual property lawyer gets a 0–100 LFR Score from nine published factors, led by reputation (25%), practice focus (15%), review volume (10%) and recency (10%). A law firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only law firms with a confirmed practice area and 3 or more reviews, or a claimed profile, are ranked.
Do intellectual property lawyers outside St. Catharines count in this ranking?
Yes, if they are within 80 km of the St. Catharines city centre, our service radius for intellectual property lawyers. Each listing shows where the law firm is based and how far away it is. Proximity is 5% of the LFR Score, so a nearby law firm gets a small edge.
Can intellectual property lawyers pay to rank higher on LawFirmsRanked?
No. The LFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured law firms may appear above the list, labelled Attorney advertising and showing their honest rank.
How do intellectual property lawyers in St. Catharines, ON charge?
Intellectual property lawyers often charge a flat fee for trademark and patent filings (official fees are separate) and hourly rates for infringement disputes. Ask for the fee arrangement in writing before you agree.
Who can file a patent or trademark for me in Canada?
Registered patent agents and trademark agents act before the Canadian Intellectual Property Office; many IP lawyers are also registered agents. This is general information, not legal advice.
How is this list of intellectual property lawyers in St. Catharines, ON ranked?
By LFR Score only, from public data on reviews, practice focus, office location and hours. Firms labelled “Attorney advertising” paid for that placement; payment never changes a rank, and a rank is not an endorsement.
Does a lawyer need an office in St. Catharines?
No, but the lawyer must be licensed in your province (or, for federal matters such as immigration, in some province). A local office makes meetings and court appearances easier, so proximity is one of our factors.
Update log for St. Catharines
- November 2026: LFR Scores recalculated for 42 intellectual property lawyers serving St. Catharines.
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