| COMPLAST 1888254 · TMA1084864 | an individual | 6 Metal | Registered | 2020 |
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| COMPLIT 1808891 · TMA1015189 · design | an individual | 25 Clothing26 Sewing | Registered | 2019 |
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| COMPLIANT 2112575 · TMA1197679 · design | an individual | 42 Science | Registered | 2023 |
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| COMPLAN 1973214 · TMA1267720 | Complan Foods Limited | 5 Pharmaceuticals | Registered | 2024 |
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| COMPLEAT 0873903 · TMA574401 | SOCIETE DES PRODUITS NESTLE S.A. | 5 Pharmaceuticals29 Meat | Registered | 2003 |
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| COMPLET 0490438 · TMA278603 | Diversey, Inc. (a Delaware corporation) | 3 Cosmetics | Registered | 1983 |
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| COMPLAN 0237033 · TMA113362 | Complan Foods Limited | 5 Pharmaceuticals17 Rubber | Registered | 1959 |
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| COMPLiQ 2248119 | Collaborative Digital Innovations LLC (Florida Limited Liability Company) | 9 Electronics35 Advertising42 Science+1 | Pending | 2023 |
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| COMPLICITÉ 0889079 · TMA519678 | GROUPE ULTIMA INC. | 36 Finance | Registered | 1999 |
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| CHAMPLAIN 1912946 · TMA1063729 | Aphria Inc. | 5 Pharmaceuticals29 Meat31 Fresh+1 | Registered | 2019 |
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| CAMOPLAST 1472952 · TMA835202 · design | Camso Inc. | 7 Machines12 Vehicles42 Science | Registered | 2012 |
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| COMPLEATS 1401698 · TMA803317 | Hormel Foods Corporation | 29 Meat30 Coffee | Registered | 2011 |
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| CHAMPLAIN 1236406 · TMA647769 | Great Vineyards Inc. | 32 Beer | Registered | 2005 |
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| CHAMPLAIN 1014407 · TMA535934 | BETON BOLDUC INC. | 19 Building | Registered | 2000 |
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| CAMOPLAST 0854900 · TMA497429 | Camso Inc. | 7 Machines12 Vehicles25 Clothing+4 | Registered | 1998 |
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| CHAMPLAIN 0414192 · TMA251081 · design | CHAMPLAIN DODGE CHRYSLER LTEE. | 35 Advertising37 Construction39 Transport | Registered | 1980 |
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| CHAMPLAIN 0180656 · UCA16603 | Owner not shown | 32 Beer | Registered | 1942 |
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| CHAMPLAIN 2337926 · design | Owner not listed | 25 Clothing35 Advertising | Pending | 2024 |
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| COMPLIGHT 1998911 · design | YANTAI WINHERE AUTO-PART MANUFACTURING CO. LTD. | 12 Vehicles | Pending | 2019 |
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| COMPLETE 2204287 · TMA1249699 | PrimeSource Building Products, Inc. (Delaware Corporation) | 6 Metal8 Hand | Registered | 2024 |
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| CIMPLATE 2203744 · TMA1239955 | Canadian Innovative Materials Ltd. | 6 Metal | Registered | 2024 |
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| COMPLEOS 2164158 · TMA1198140 | CP KELCO U.S., INC. | 1 Chemicals | Registered | 2023 |
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| COMPLOTS 2141027 · TMA1205111 | an individual | 25 Clothing | Registered | 2023 |
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| COMPLY 1992886 · TMA1252000 | 3M Company | 9 Electronics | Registered | 2024 |
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| COMPLEX 1876248 · TMA1117323 | Commerce Media Holdings, LLC | 35 Advertising38 Telecommunications41 Education+1 | Registered | 2022 |
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