| MADEVAL 2217306 · design | an individual | 20 Furniture42 Science | Pending | 2022 |
| MEDIAVALET 1514045 · TMA822256 | MediaValet Inc. | 42 Science | Registered | 2012 |
| MEDIABALL 1260990 · TMA824883 | Grass Valley USA, LLC | 9 Electronics16 Paper38 Telecommunications+2 | Registered | 2012 |
| MEDIFLAX 1850462 · TMA1013929 | Prairie Tide Diversified Inc. | 5 Pharmaceuticals | Registered | 2019 |
| MEDAVAIL 1637938 · TMA928199 · design | MedAvail, Inc. a corporation of the State of Delaware | 9 Electronics42 Science | Registered | 2016 |
| MEDAVAIL 1637937 · TMA916261 | MedAvail, Inc. a corporation of the State of Delaware | 9 Electronics42 Science | Registered | 2015 |
| MEDIPILL 1459068 · TMA781258 · design | Les Logiciels Musca inc. personne morale | 9 Electronics | Registered | 2010 |
| MEDIPILL 1449555 · TMA781261 | Les Logiciels Musca inc. | 9 Electronics | Registered | 2010 |
| MEDIPLAN 0896248 · TMA524881 | BANQUE NATIONALE DU CANADA, UNE CORPORATION LÉGALEMENT CONSTITUÉE | 35 Advertising36 Finance | Registered | 2000 |
| MEDIPEEL 2371087 | Skinidea Co.Ltd. | 3 Cosmetics35 Advertising | Pending | 2024 |
| MediPlas 2291781 | Owner not listed | 9 Electronics10 Medical11 Lighting | Pending | 2023 |
| medievaldepot 2295273 | an individual | 8 Hand28 Toys | Pending | 2023 |
| MediaVelox 1839845 · TMA1073088 | appero GmbH | 9 Electronics42 Science | Registered | 2020 |
| MEADOWVALE 0663130 · TMA401917 · design | Owner not shown | 29 Meat | Registered | 1992 |
| MEADOWVALE 0663129 · TMA407683 · design | Owner not shown | 29 Meat | Registered | 1993 |
| MEADOWVALE 0658153 · TMA384032 | Owner not shown | 29 Meat | Registered | 1991 |
| MEDIPLAST 1328916 · TMA722370 | PRETIUM CANADA PACKAGING ULC | 21 Housewares40 Treatment | Registered | 2008 |
| MÉDIAFILM 1327300 · TMA704546 | ORGANISATION COMMUNICATIONS ET SOCIÉTÉ OCS INC. | 38 Telecommunications41 Education | Registered | 2008 |
| MEDIPLAST 2301934 · design | Owner not listed | 5 Pharmaceuticals | Pending | 2023 |
| MOTOFIL 2245516 · TMA1265712 · design | an individual | 7 Machines | Registered | 2024 |
| METABOLY 2205001 · TMA1240114 | METABOLY RESEARCH GROUP INC. | 42 Science44 Medical | Registered | 2024 |
| MODOOPLAY 2123813 · TMA1268254 · design | Nanjing Modoo Interactive Entertainment Information Technology Co. Ltd. | 9 Electronics35 Advertising41 Education+1 | Registered | 2024 |
| metFlow 2118071 · TMA1213031 | Nedschroef Altena GmbH | 6 Metal | Registered | 2023 |
| MITUBULARS 2098011 · TMA1219025 | Marubeni-Itochu Steel Inc. | 6 Metal9 Electronics35 Advertising+4 | Registered | 2024 |
| MEDIBULK 2086118 · TMA1168728 · design | Western Extraction Ltd. | 5 Pharmaceuticals34 Tobacco | Registered | 2023 |