Registered patent agent
David Allen Ruston
Firm
Marks & Clerk Canada
Address
33 Yonge Street, Suite 300
Toronto, ON, M5E 1G4
CA
Phone
Registered as
Registered patent agent
Other attorneys at Marks & Clerk Canada
- James D. BakerUSPTO Reg. 61252 · Ottawa, ON
- Jennifer N. DavyUSPTO Reg. 78710 · Toronto, ON
- Jean-Charles GregoireUSPTO Reg. 71972 · Ottawa, ON
- Paul R HorbalUSPTO Reg. 67334 · Toronto, ON
- Simmi MangatUSPTO Reg. 62843 · Ottawa, ON
- Justin W SmithUSPTO Reg. 83048 · Ottawa, ON
- Maria WeiUSPTO Reg. 80942 · Toronto, ON
- Edwin WongUSPTO Reg. 59863 · Ottawa, ON
Other patent attorneys in Toronto, ON
- Michael John Anthony AdamsRiches, McKenzie & Herbert LLP
- Kazim AghaAird & McBurney LP
- Nicholas A. AitkenSmart & Biggar LP
- MaryAnne ArnoldoTorys LLP
- David K. BaileyMiller Thomson LLP
- Robert J. A. BakerSmart & Biggar LP
- Denver T. J. BandstraTorys LLP
- John M. BannisterBrunet & Co.
Frequently asked
Frequently asked about David Allen Ruston
Is David Allen Ruston a registered patent attorney?
David Allen Ruston is a registered patent agent (USPTO Registration Number 34495). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is David Allen Ruston located?
David Allen Ruston's office is in Toronto, ON (M5E 1G4). Affiliated with Marks & Clerk Canada.
What firm does David Allen Ruston work at?
David Allen Ruston is listed as affiliated with Marks & Clerk Canada on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact David Allen Ruston?
David Allen Ruston's office phone (per the USPTO public roster) is 416-849-8390. Verify availability and intake details directly with the firm before sending privileged materials.
Should I prepare anything before contacting a patent attorney?
Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.
Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.