| CATCA 0602530 · TMA358844 | CANADIAN AIR TRAFFIC CONTROL ASSOCIATION | 9 Electronics16 Paper21 Housewares+5 | Registered | 1989 |
| CTCI 1935917 · TMA1156647 · design | CTCI CORPORATION, a legal entity | 6 Metal9 Electronics11 Lighting+7 | Registered | 2022 |
| CTC 1818294 · TMA1095417 | Canadian Pharmacists Association | 9 Electronics16 Paper44 Medical | Registered | 2021 |
| CTC 1666958 · TMA933363 · design | Calgary Tennis Centre Ltd. | 14 Jewellery16 Paper18 Leather+10 | Registered | 2016 |
| CTC 1474955 · TMA808802 | Composite Technologies Co. LLC | 40 Treatment | Registered | 2011 |
| CTC 1459638 · TMA775573 | Transom Symphony OpCo, LLC DBA Beauty Quest Group | 9 Electronics11 Lighting | Registered | 2010 |
| CTC 1433496 · TMA801864 · design | Owner not shown | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2011 |
| CTC 1318268 · TMA731840 · design | CTC Logistics Canada Inc. | 36 Finance39 Transport | Registered | 2009 |
| CTC 2212047 | CTC Innovations, LLC | 36 Finance | Pending | 2022 |
| CTC 2208093 | CTC Innovations, LLC | 36 Finance | Pending | 2022 |
| CTC 2125733 | CTC Innovations, LLC | 36 Finance | Pending | 2021 |
| CTC 0921126 | Canadian Tourism Commission | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2011 |
| CUTICA 1894225 · TMA1086384 | an individual | 9 Electronics10 Medical | Registered | 2020 |
| CITICA 1164998 · TMA613727 | SHIMANO INC. | 1 Chemicals20 Furniture28 Toys | Registered | 2004 |
| CITCO 1740918 · TMA1089111 | THE CITCO GROUP LIMITED | 9 Electronics35 Advertising36 Finance+2 | Registered | 2020 |
| CATCH 1538724 · TMA863435 | Apple Inc. | 9 Electronics42 Science | Registered | 2013 |
| CETCO 1448990 · TMA816046 | AMCOL International Corporation (Delaware corporation) | 1 Chemicals11 Lighting17 Rubber+5 | Registered | 2012 |
| CATCH 1171271 · TMA659812 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA | 9 Electronics16 Paper21 Housewares+4 | Registered | 2006 |
| CATCH 1074937 · TMA580567 | Dharampal Satyapal Sons Pvt. Ltd. | 32 Beer | Registered | 2003 |
| CATCO 1073097 · TMA566087 | AirTek, LLC | 12 Vehicles | Registered | 2002 |
| COTCO 1007039 · TMA551905 · design | CreeLED, Inc. | 11 Lighting | Registered | 2001 |
| CETCO 0806215 · TMA509841 | AMCOL INTERNATIONAL CORPORATION | 1 Chemicals5 Pharmaceuticals11 Lighting+3 | Registered | 1999 |
| CATCH 0775605 · TMA511441 · design | Dharampal Satyapal Sons Pvt. Ltd. | 1 Chemicals30 Coffee | Registered | 1999 |
| CITCO 0718095 · TMA428250 · design | THE CITCO GROUP LIMITED | 36 Finance45 Legal | Registered | 1994 |
| CITCO 0667509 · TMA403855 | THE CITCO GROUP LIMITED | 35 Advertising36 Finance | Registered | 1992 |