| WINTERTRAC 0840897 · TMA504217 | Canadian Tire Corporation, Limited | 12 Vehicles | Registered | 1998 |
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| WINTERTREK 1932132 · TMA1159629 | Canadian Tire Corporation, Limited | 12 Vehicles | Registered | 2023 |
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| WINTERCRAFT 1580261 · TMA856989 | Minnehaha Group, LLC | 4 Oils11 Lighting16 Paper+2 | Registered | 2013 |
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| WINTERCRAFT 1576928 · TMA898345 | Kumho Tire Co., Inc. | 12 Vehicles | Registered | 2015 |
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| WINTERTIME 2305170 · TMA1263387 | Owner not listed | 31 Fresh | Registered | 2024 |
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| WINTERTIME 2129928 · TMA1222130 | PetSmart Home Office LLC | 28 Toys | Registered | 2024 |
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| WINTERPLEX 2119385 · TMA1203978 | TIB MOLBIOL Syntheselabor GmbH | 1 Chemicals5 Pharmaceuticals | Registered | 2023 |
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| WINTERPEAK 1985664 · TMA1098628 | Sumitomo Rubber Industries, Ltd. | 12 Vehicles | Registered | 2021 |
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| WINTERPRO 1815993 · TMA993533 · design | Shandong Jinyu Tire Co. Ltd. | 12 Vehicles | Registered | 2018 |
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| WINTERSTAR 1537647 · TMA990747 | Point S Development Société par Actions Simplifiée | 12 Vehicles | Registered | 2018 |
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| WINTERFLEX 1503664 · TMA809525 | Winter Equipment Company, Inc. | 7 Machines | Registered | 2011 |
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| WINTERGAS 1053039 · TMA642500 | Suncor Energy Inc. | 4 Oils | Registered | 2005 |
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| WINTERTECH 0904092 | Ville de Montreal | All goods and services | Protected | 1990 |
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| WINTERFLEX 0847186 · TMA529899 | WIIP, INC. | 9 Electronics | Registered | 2000 |
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| WONDERTAX 2372113 | WonderTax LLC | 42 Science | Pending | 2024 |
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| Winterlux 2077120 | an individual | 24 Textiles | Pending | 2021 |
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| WINTERGREEN 1998949 · TMA1281889 · design | African Cosmetics Limited | 3 Cosmetics | Registered | 2025 |
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| WINTERFROST 1980031 · TMA1267748 | The Procter & Gamble Company | 5 Pharmaceuticals | Registered | 2024 |
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| WINTERARMOR 1808518 · TMA1053225 | PPG Architectural Finishes, Inc. | 2 Paints | Registered | 2019 |
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| WINTERCROFT 1771930 · TMA1018451 | Wintercroft Design Ltd | 9 Electronics11 Lighting14 Jewellery+5 | Registered | 2019 |
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| WINTERGREEN 1513430 · TMA827979 | Wintergreen Advisers, LLC | 36 Finance | Registered | 2012 |
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| WINTERGUARD 1346793 · TMA721529 | CertainTeed Corporation | 19 Building | Registered | 2008 |
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| WINTERSTONE 1295545 · TMA706413 · design | an individual | 7 Machines | Registered | 2008 |
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| WINTERSTICK 1239424 · TMA703888 | Bigelow Mountain Partners LLC (a Limited Liablilty Company in the State of Massachusetts) | 18 Leather25 Clothing28 Toys | Registered | 2007 |
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| WINTERFRESH 1166394 · TMA659666 | WM. Wrigley JR. Company a Delaware corporation | 3 Cosmetics30 Coffee | Registered | 2006 |
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