| COMPETITOR 1769780 · TMA963705 | Competitor Swim Products, Inc. | 28 Toys | Registered | 2017 |
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| COMPETITOR 1588687 · TMA921331 | World Triathlon Corporation | 9 Electronics41 Education | Registered | 2015 |
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| COMPETITOR 1564248 · TMA895328 | Medical Depot, Inc. dba Drive Medical Design & Manufacturing | 20 Furniture | Registered | 2015 |
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| COMPETITOR 0819908 · TMA480583 | The Canada Life Assurance Company | 36 Finance | Registered | 1997 |
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| COMPETITION 1403301 · TMA757179 | an individual | 31 Fresh | Registered | 2010 |
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| COMPÉTIVERT 0926960 · design | INVESTISSEMENT QUÉBEC | All goods and services | Protected | 2021 |
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| COMPÉTIVERT 0926959 | INVESTISSEMENT QUÉBEC | All goods and services | Protected | 2021 |
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| COMPETITION 0469684 · TMA285505 | an individual | 9 Electronics | Registered | 1983 |
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| COMPETITION 0390648 · TMA216197 | FGL Sports Ltd. | 25 Clothing | Registered | 1976 |
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| Competiez 2075072 | an individual | 25 Clothing | Pending | 2021 |
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| COMPATILUS 1906989 · TMA1120521 | AIRNOV, INC. | 37 Construction40 Treatment42 Science | Registered | 2022 |
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| COMPETIA 1053427 · TMA562026 | Estelle Metayer Strategies Inc. | 9 Electronics35 Advertising36 Finance+4 | Registered | 2002 |
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| COMPETE 0915984 | MCMASTER UNIVERSITY | All goods and services | Protected | 2004 |
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| COMPETEK 2149529 | Sidel Participations (société par actions simplifiée) | 7 Machines9 Electronics37 Construction+1 | Pending | 2021 |
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| COMPUTRITION 0803882 · TMA476853 | COMPUTRITION, INC. | 9 Electronics | Registered | 1997 |
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| Competitactics 2011335 · TMA1129845 | an individual | 35 Advertising | Registered | 2022 |
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| COMPUTECH 1416831 · TMA775002 · design | an individual | 35 Advertising37 Construction | Registered | 2010 |
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| COMPEDES 1389854 · TMA745215 | Lely Patent N.V. a company organized and existing under the laws of the kingdom of the Netherlands | 19 Building27 Carpets | Registered | 2009 |
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| COMPUTING 1349445 · TMA769534 · design | PLATHOME KABUSHIKI KAISHA (also trading as PLAT'HOME CO., LTD.) | 9 Electronics | Registered | 2010 |
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| COMBITEST 1298475 · TMA682875 | Ovo Fertility Inc. | 44 Medical | Registered | 2007 |
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| COMPEED 1089785 · TMA604899 | Laboratoire HRA Pharma SAS | 3 Cosmetics5 Pharmaceuticals20 Furniture+1 | Registered | 2004 |
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| COMPTOMETER 0990772 · NFLD772 | VICTOR COMPTOMETER CORPORATION (AN ILLINOIS CORPORATION) | 9 Electronics | Registered | 1919 |
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| COMPEED 0841755 · TMA498300 · design | Laboratoire HRA Pharma SAS | 5 Pharmaceuticals | Registered | 1998 |
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| COMPUTICKET 0789022 · TMA488601 | COMPUTICKET (PROPRIETARY) LIMITED | 16 Paper39 Transport | Registered | 1998 |
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| COMPUTICKET 0789021 · TMA488454 · design | COMPUTICKET (PROPRIETARY) LIMITED | 16 Paper39 Transport | Registered | 1998 |
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