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  • Canada
    • Ottawa
    • Toronto
  • China
    • Beijing
    • Hong Kong
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    • Paris
    • Sophia Antipolis
  • Luxembourg
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  • UK
    • Aberdeen
    • Birmingham
    • Cambridge
    • Edinburgh
    • Glasgow
    • London
    • Manchester
    • Oxford
Client liaison
  • Japan
  • Korea
Expertise
Services
  • Patents
  • Brands & Trade Marks
  • Designs
  • Litigation & Dispute Resolution
  • Commercial IP & Contracts
  • Due Diligence
  • Freedom to Operate
  • EPO Patent Oppositions
  • European Patent Validations
  • Anti-counterfeiting
  • Open Source & Third Party Code
Sectors
  • Energy & Environment
  • Life Sciences
  • Agritech
  • Medical Technologies
  • Chemistry
  • Transport
  • Entertainment & Creative Industries
  • Food & Drink
  • Fashion & Retail
  • Universities & Research Bodies
  • Start-ups & Spin-outs
  • Digital Transformation
    • 3D Printing
    • Artificial Intelligence
    • Blockchain
    • Data & Connectivity
    • Extended Reality
    • Industry 4.0
About Us
  • Working with us
  • Awards
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  • Diversity & Inclusion
  • Careers
Insights
  • M&C Reacts
  • Beyond Brexit - UK & EU trade marks
  • Covid-19
  • Unitary Patent & Unified Patent Court
  • All publications

David A Ruston

Partner

Americas
Toronto

Get in contact

+1 416 849 8390 druston@marks-clerk.ca
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Dave specialises in the field of engineering advising clients on all aspects of IP, from protection through to enforcement and strategic management of third party IP risks.

Dave has vast experience in many engineering disciplines, including oil and gas technologies, telecommunications, the aerospace industry, medical imaging and touch sensitive displays. He represents clients before the Patent Appeals Board of the Canadian Patent Office, and also has significant experience in multi-jurisdictional due diligence, including the preparation of patentability, freedom-to-operate and validity opinions, performing due diligence in commercial transactions involving IP assets, and providing technical support in litigation matters.

Dave was born and educated in Canada, obtaining a bachelor’s of science degree in Electrical Engineering from Queen’s University in Kingston, Ontario.

Dave has been recognised as a leading patent practitioner and has been recommended in the IAM Patent1000 guide 2015 to 2018.

Specialist in

  • Patents
  • Due Diligence
  • Energy & Environment
  • Transport

Qualifications

BSc

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Latest Insights

Insight
- 05 November 2020

Patenting Artificial Intelligence in Canada, the UK and Europe: A Primer

Artificial intelligence (AI) has been the subject of human fascination and awe (and Hollywood movies) for many years.
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Insight
- 04 November 2020

CIPO's Patentable Subject-Matter Guidance - same code, different syntax

On August 21, 2020, the Federal Court of Canada (FCC) handed down its ruling in the appeal of Yves Choueifaty against the rejection of Canadian Patent Application No. 2,635,393 for a “Method and Systems for Provision of Anti-Benchmark Portfolio” by the Commissioner of Patents.
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Insight
- 26 October 2020

Navigating your Global Patent Prosecution Strategy under Canada’s new Patent Rules

The new Canadian Patent Rules came into effect on October 30, 2019 with the intent to make Canada compliant with its international treaty obligations by harmonizing and streamlining the administrative procedures for patents and patent applications.
Read more
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