| CELESCO 0990670 · NFLD670 | J. LYONS & CO. LIMITED | 29 Meat | Registered | 1918 |
| COLOSSEO 1634968 · TMA938399 | Oldcastle Building Products Canada, Inc./Les Matériaux de Construction Oldcastle Canada, Inc. | 19 Building | Registered | 2016 |
| COALESSE 1516177 · TMA867252 | Steelcase Inc. | 20 Furniture | Registered | 2013 |
| COALESSE 1390685 · TMA863099 · design | Steelcase Inc. | 20 Furniture | Registered | 2013 |
| COALESSE 1374005 · TMA785412 | Steelcase Inc. | 20 Furniture | Registered | 2010 |
| CELLESSE 0823175 · TMA517452 | an individual | 10 Medical | Registered | 1999 |
| COLOSSE 2254204 · TMA1283013 · design | 9394-4049 Québec Inc. f.a.s.n.r.s. COLOSSE FUMOIR / COLOSSE SMOKEHOUSE | 29 Meat30 Coffee35 Advertising+1 | Registered | 2025 |
| CLASS 2088856 · TMA1149340 · design | an individual | 16 Paper | Registered | 2022 |
| CLEAS 2056135 · TMA1151977 | Sangetsu Corporation | 16 Paper17 Rubber19 Building+1 | Registered | 2022 |
| CyLyse 1947335 · TMA1203365 | Sysmex Corporation | 1 Chemicals5 Pharmaceuticals | Registered | 2023 |
| CLASS 1925384 · TMA1113746 | CARROT SEED IP LLC (DELAWARE LLC) | 35 Advertising36 Finance | Registered | 2021 |
| CLASSI 1779452 · TMA992757 | an individual | 9 Electronics35 Advertising36 Finance+1 | Registered | 2018 |
| CLASS 1751638 · TMA1055896 | Sielox LLC | 9 Electronics42 Science | Registered | 2019 |
| CLECO 1728548 · TMA951562 | Apex Brands, Inc. | 7 Machines8 Hand9 Electronics | Registered | 2016 |
| CELECO 1382318 · TMA747777 | Owner not shown | 17 Rubber | Registered | 2009 |
| CLASS 1368446 · TMA751494 | Wabtec Holding Corp. | 9 Electronics | Registered | 2009 |
| CLASSE 1213516 · TMA642332 · design | Sound United, LLC | 9 Electronics37 Construction | Registered | 2005 |
| CLASSÉ 1213515 · TMA641798 | Sound United, LLC | 9 Electronics37 Construction | Registered | 2005 |
| CLASS 1182299 · TMA650111 · design | Active Network, LLC | 9 Electronics35 Advertising42 Science | Registered | 2005 |
| CALEGO 1150681 · TMA600985 | CALEGO INTERNATIONAL INC. | 16 Paper18 Leather20 Furniture+1 | Registered | 2004 |
| CULEASE 0857135 · TMA555067 | Canadian Credit Union Association Cooperative | 36 Finance | Registered | 2001 |
| CLASSY 0833086 · TMA485686 · design | Tenue de Gala Avanti (2009) Inc. | 14 Jewellery18 Leather25 Clothing+1 | Registered | 1997 |
| CLASSY 0833085 · TMA485495 · design | Tenue de Gala Avanti (2009) Inc. | 14 Jewellery18 Leather25 Clothing+1 | Registered | 1997 |
| CLASSY 0833084 · TMA485496 · design | Tenue de Gala Avanti (2009) Inc. | 14 Jewellery18 Leather25 Clothing+1 | Registered | 1997 |
| CLASSY 0833083 · TMA485720 · design | Tenue de Gala Avanti (2009) Inc. | 14 Jewellery18 Leather25 Clothing+1 | Registered | 1997 |