| EFFORT'S 0843379 · TMA526898 | EFFORT INDUSTRIES INC. | 18 Leather25 Clothing | Registered | 2000 |
| EASI-EFFORT 2298868 · design | Owner not listed | 9 Electronics | Pending | 2023 |
| JOINT EFFORT 2009192 · TMA1279941 | Aphria Inc. | 5 Pharmaceuticals9 Electronics16 Paper+5 | Registered | 2025 |
| GREEN EFFORT 1399681 · TMA803752 | an individual | 42 Science | Registered | 2011 |
| EFFORT TRUST 1214476 · TMA635795 · design | THE EFFORT TRUST COMPANY | 36 Finance | Registered | 2005 |
| EFFORT TRUST 0434352 · TMA244548 | THE EFFORT TRUST COMPANY | 36 Finance | Registered | 1980 |
| RELIEF EFFORT 1446715 · TMA778951 | Avon NA IP LLC | 3 Cosmetics | Registered | 2010 |
| MINIMUM EFFORT 2284410 · TMA1094728 | Maximum Effort Productions, LLC | 9 Electronics16 Paper35 Advertising+1 | Registered | 2021 |
| MAXIMUM EFFORT 1917358 · TMA1128155 | Maximum Effort Productions, Inc. | 9 Electronics41 Education | Registered | 2022 |
| Value Over Effort 2109479 | an individual | 41 Education | Pending | 2021 |
| Effort Over Ambition 2031346 · TMA1136521 | an individual | 25 Clothing | Registered | 2022 |
| CHAQUE EFFORT COMPTE 0918654 | Commission Scolaire de la Région-de-Sherbrooke | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2009 |
| OUR EFFORT IS FOR YOU 1214486 · TMA631195 | THE EFFORT TRUST COMPANY | 36 Finance | Registered | 2005 |
| ALL IT COST WAS EFFORT 2214952 · TMA1244460 | an individual | 25 Clothing | Registered | 2024 |
| WE LOVE A JOINT EFFORT 2009191 · TMA1279940 · design | Aphria Inc. | 5 Pharmaceuticals9 Electronics16 Paper+5 | Registered | 2025 |
| WE LOVE A JOINT EFFORT 2009190 · TMA1279939 | Aphria Inc. | 5 Pharmaceuticals9 Electronics16 Paper+5 | Registered | 2025 |
| THOUGHT EFFORT RESULTS 1306705 · TMA729424 | Mitchell Roslyn Kunkel Inc. | 42 Science45 Legal | Registered | 2008 |
| THE EXTRA EFFORT COUNTS 1928500 · TMA1110651 | an individual | 35 Advertising36 Finance | Registered | 2021 |
| FOUR WHEELS...ZERO EFFORT 1446777 · TMA792185 | an individual | 18 Leather | Registered | 2011 |
| GROUP EFFORT INITIATIVE 2121403 | Maximum Effort Productions, Inc. | 35 Advertising41 Education | Pending | 2021 |
| ZEN ZERO EFFORT NONBANK 2075810 | ZEN.COM | 9 Electronics | Pending | 2020 |
| Second Effort Goaltending 2302335 | an individual | 25 Clothing | Pending | 2023 |
| Maximum Joy. Minimum Effort. 2142596 | Paris312, LLC, a Limited Liability Company from Illinois | 35 Advertising | Pending | 2021 |
| HBC NOTHING WITHOUT EFFORT 0925490 · design | The Corporation of the Township of Langley | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2018 |
| POWER SLOT 2X THE POWER. HALF THE EFFORT. 1682958 · TMA916218 · design | THE BLACK & DECKER CORPORATION | 8 Hand | Registered | 2015 |