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Income taxes - Schedule of breakdown of research and development expenses (Details) - CAD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2019
Major components of tax expense (income) [abstract] |  |  |  |  |
R&D expenses |  | $ 2,064,493 | $ 2,369,145 | $ 944,909 |
Less: Investment tax credits |  | 0 | (231,007) | (127,325) |
R&D expenses, net | $ 817,584 | $ 2,064,493 | $ 2,138,138 | $ 817,584 | $ 1,003,705

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- Definition The amount of expenditure directly attributable to research or development activities, recognised in profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2022-03-24 -Paragraph 126 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_126&doctype=Standard -URIDate 2022-03-24 + Details
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