| ECOLOGIC 1834732 · TMA1021007 | E-One, Inc. | 9 Electronics | Registered | 2019 |
| ECOLOGIC 1834727 · TMA1033246 · design | E-One, Inc. | 9 Electronics | Registered | 2019 |
| ECOLOGIC 1695060 · TMA934918 | Monessen Hearth Systems Company | 9 Electronics | Registered | 2016 |
| ECOLOGIC 1637759 · TMA914319 · design | LifeLabs LP | 42 Science44 Medical | Registered | 2015 |
| ecoLOGIC 1479909 · TMA808295 | Optima Telecom Incorporated | 9 Electronics16 Paper | Registered | 2011 |
| ECOLOGIC 1440062 · TMA772011 | HoMedics USA, LLC | 20 Furniture | Registered | 2010 |
| ECOLOGIC 0820811 · TMA547749 · design | LEDVANCE LLC | 9 Electronics11 Lighting | Registered | 2001 |
| ECOLOGIC 0812696 · TMA534921 | LEDVANCE LLC | 9 Electronics | Registered | 2000 |
| ECOLOGIC 0701712 · TMA410942 | GH International Sealants ULC | 1 Chemicals19 Building | Registered | 1993 |
| ECOLOGIC 1818828 · design | CLOVERDALE PAINT INC. | 2 Paints | Pending | 2017 |
| ECOLOGIX 1819538 · TMA1038090 | KITTRICH CORPORATION | 5 Pharmaceuticals | Registered | 2019 |
| ECHOLOGICS 1619298 · TMA896049 · design | Mueller International, LLC | 9 Electronics41 Education42 Science | Registered | 2015 |
| ECHOLOGICS 1619297 · TMA896050 | Mueller International, LLC | 9 Electronics41 Education42 Science | Registered | 2015 |
| ÉCOLOGIQUE 1358128 · TMA746056 · design | Thibideau Holdings Ltd. | 1 Chemicals25 Clothing | Registered | 2009 |
| ECOLOGIX 1330536 · TMA822436 | PVH LEGWEAR LLC | 25 Clothing | Registered | 2012 |
| ECOLOGIQ 0686983 · TMA402704 | TUBULAR INDUSTRIES OF CANADA ULC | 7 Machines11 Lighting | Registered | 1992 |
| ECOLOGIK 2085187 | Enviroway Detergent Manufacturing Inc. | 3 Cosmetics5 Pharmaceuticals | Pending | 2021 |
| Ecologie 2013757 | DANICA IMPORTS LTD. | 21 Housewares24 Textiles | Pending | 2020 |
| ECOLOGENIX 2217177 · TMA1280889 | Ecologenix, LLC | 1 Chemicals | Registered | 2025 |
| ECOLOG 1674968 · TMA930472 · design | an individual | 7 Machines37 Construction42 Science | Registered | 2016 |
| EXALOGIC 1498492 · TMA816954 | Oracle International Corporation | 9 Electronics42 Science | Registered | 2012 |
| ÉCOLOCAL 1435402 · TMA763253 · design | LES PRODUCTIONS HORTICOLES DEMERS INC. | 29 Meat31 Fresh | Registered | 2010 |
| ECOLOGY 1403537 · TMA802138 | CW Marketing Pty Ltd | 21 Housewares | Registered | 2011 |
| ECOLOG 1142188 · TMA608381 | Bois BSL Inc. | 4 Oils | Registered | 2004 |
| ECOLOC 1133627 · TMA595820 | F. VON LANGSDORFF LICENSING LIMITED | 19 Building | Registered | 2003 |