Expertise
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Practice Areas:
- Bar Admissions:
- Education:
- Osgoode Hall Law School (2016) JD
- University of Toronto (2013) PhD (Chemistry)
- Memorial University of Newfoundland (2008) BSc (Chemistry)
Details
- Bio
- Cases
- Associations
- Blog Posts
- News & Media
- Publications & Presentations
- Recognition
Corey McClary (he/him)
is an associate at Lenczner Slaght.
Corey's practice is primarily focused on intellectual property law, with an emphasis on pharmaceutical patent litigation. Corey has experience advising clients on complex disputes, including actions under the Patented Medicines (Notice of Compliance) Regulations, patent infringement and impeachment actions, and judicial review proceedings. Corey also regularly provides strategic patent and regulatory advice.
Prior to joining Lenczner Slaght, Corey summered, articled and practiced in the intellectual property litigation group at a leading international law firm in Toronto.
Before attending law school, Corey obtained a Ph.D. in organic chemistry. His graduate research focused on developing methods for the regioselective functionalization of carbohydrates and measuring the strength of non-covalent interactions. His research has been published in peer-reviewed scientific journals.
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The NOCO Company, Inc. v Canadian Tire Corporation, Limited
Counsel to Canadian Tire Corporation, Limited in an action for patent infringement in the Federal Court in respect of Canadian Patent No. 2,916,782.
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Merck Canada Inc v The Minister of Health
Counsel to Merck Canada Inc. in a judicial review proceeding in the Federal Court regarding an application for a certificate of supplementary protection for Canadian Patent No. 2,670,892 and BELSOMRA.
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Gilead Sciences, Inc et al v Pharmascience Inc
Counsel to Gilead Sciences, Inc. and Gilead Sciences Canada, Inc. in a NOC action in the Federal Court in respect of Canadian Patent Nos. 2,845,553 and 2,990,210.
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Bernard Charles Sherman v Pfizer Canada Inc
Counsel to Pfizer Canada Inc. and Pfizer Inc. in an action for patent infringement in the Federal Court in respect of Canadian Patent No. 2,355,347.
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Akebia Therapeutics Inc v Fibrogen Inc
Counsel to FibroGen Inc. and AstraZeneca AB in an impeachment action in the Federal Court in respect of Canadian Patent Nos. 2,468,083, 2,467,689, and 2,526,496.
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Gilead Sciences, Inc et al v JAMP Pharma Corporation
Counsel to Gilead Sciences, Inc. and Gilead Sciences Canada, Inc. in a NOC action in the Federal Court in respect of Canadian Patent No. 2,990,210.
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Gilead Sciences, Inc et al v Natco Pharma (Canada) Inc
Counsel to Gilead Sciences, Inc. and Gilead Sciences Canada, Inc. in a NOC action in the Federal Court in respect of Canadian Patent No. 2,845,553.
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Merck Canada Inc v The Minister of Health
Counsel to Merck Canada Inc. in a judicial review proceeding in the Federal Court in regards to a patent listing for KEYTRUDA.
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Gilead Sciences Inc, et al v JAMP Pharma Corporation
Counsel to Gilead Sciences, Inc. and Gilead Sciences Canada, Inc. in a NOC action in the Federal Court in respect of Canadian Patent No. 2,845,553.
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Genentech Inc. et al v Amgen Canada Inc.
Counsel to Hoffmann-La Roche Limited and Genentech, Inc. in various Federal Court actions under the PMNOC Regulations in respect of trastuzumab (HERCEPTIN), which were the first actions under the new regime.
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Toronto Intellectual Property Group
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Ontario Bar Association
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Fall Regulatory Round Up – The Shifting Shape of the Canadian Landscape
Fall Regulatory Round Up
Activity abounds on the regulatory landscape from modernization and transparency initiatives to consultations, collaborations, and even potential implementations. Our Fall Regulatory Round Up highlights significant developments for drug products and patents that are of interest to those in the life sciences and biotech spaces. We will be following these important regulatory initiatives as they continue to unfold and will provide updates of interest.
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Lenczner Slaght Litigators Recognized as the Best Lawyers in Canada
In the 2025 edition of Best Lawyers in Canada, Lenczner Slaght is proud to receive 168 total rankings, with 45 of our expert litigators recognized for their expertise across 25 practice areas.
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Corey McClary Joins Lenczner Slaght’s IP Team
Canada’s leading litigation firm continues to grow its expert Intellectual Property Group with the addition of another exceptional lawyer, Corey McClary.
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Corey McClary co-authored the article Organoboron-Promoted Regioselective Glycosylations in the Synthesis of a Saponin-Derived Pentasaccharide from Spergularia ramosa, published in The Journal of Organic Chemistry.
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Corey McClary co-authored the article Applications of Organoboron Compounds in Carbohydrate Chemistry and Glycobiology: Analysis, Separation, Protection and Activation, published in Carbohydrate Research.
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Corey McClary co-authored the article Anion Receptors Composed of Hydrogen- and Halogen-Bond Donor Groups: Modulating Selectivity With Combinations of Distinct Noncovalent Interactions, published in the Journal of the American Chemical Society.
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Corey McClary co-authored the article Ligand Directed Self-Assembly vs. Metal Ion Coordination Algorithm - When Does the Ligand or the Metal Take Control?, published in Dalton Transactions.
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Best Lawyers in Canada (2025)
Ones to Watch – Intellectual Property