| MIDLAP 2201491 | Midlap Technologies Inc. | 42 Science | Pending | 2022 |
| MEDLABS 1720146 · TMA1005445 | Medlab Clinical Limited | 5 Pharmaceuticals | Registered | 2018 |
| MOODLAB 2289491 | Moodlab Holdings Inc. | 9 Electronics35 Advertising41 Education+1 | Pending | 2023 |
| MADlib 1702744 · TMA964643 | The Apache Software Foundation (a Delaware corporation) | 9 Electronics | Registered | 2017 |
| MIDLF 1553460 · TMA904862 | Warsaw Orthopedic Inc. | 10 Medical | Registered | 2015 |
| MATLAB 1511850 · TMA819032 | THE MATHWORKS, INC. | 42 Science | Registered | 2012 |
| MATLAB 0708855 · TMA414288 | THE MATHWORKS, INC. | 9 Electronics | Registered | 1993 |
| MATLAB 2110863 | The MathWorks, Inc. (a Delaware corp.) | 9 Electronics41 Education | Pending | 2021 |
| MIDDLEBY 2117972 · TMA1209653 | MIDDLEBY MARSHALL INC. | 35 Advertising40 Treatment42 Science+1 | Registered | 2023 |
| MEDIALAB 0773456 · TMA521108 | MEDIASTATS INC. | 9 Electronics16 Paper28 Toys | Registered | 2000 |
| MADLUBE 2255068 · TMA1284678 | an individual | 4 Oils | Registered | 2025 |
| MIDELVY 2041363 · TMA1121770 | an individual | 5 Pharmaceuticals | Registered | 2022 |
| METALAB 1613871 · TMA991418 | Metalab Design Ltd. | 9 Electronics35 Advertising42 Science | Registered | 2018 |
| MediaLB 1187784 · TMA766487 | SMSC Europe GmbH | 5 Pharmaceuticals6 Metal7 Machines+5 | Registered | 2010 |
| METALAB 0925811 | Université d'Ottawa / University of Ottawa | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2019 |
| MODULABLE 2368534 · design | Owner not listed | 37 Construction42 Science43 Restaurants | Pending | 2024 |
| METALUBE 2195120 · TMA1265447 · design | Metalube Group Ltd | 4 Oils | Registered | 2024 |
| MADLOVE 2006755 · TMA1185799 | MADLOVE LLC | 25 Clothing | Registered | 2023 |
| Metallovation 1987029 · TMA1140264 | Gienanth GmbH | 6 Metal7 Machines40 Treatment+1 | Registered | 2022 |
| METALFORCE 1985197 · TMA1151253 | an individual | 2 Paints | Registered | 2022 |
| MODALPASS 1951827 · TMA1193104 | GENERAL ELECTRIC COMPANY | 9 Electronics | Registered | 2023 |
| MODLIV 1909602 · TMA1135434 | Multy Home LP | 1 Chemicals6 Metal7 Machines+7 | Registered | 2022 |
| MODELHUB 1902130 · TMA1142213 · design | Owner not shown | 38 Telecommunications41 Education42 Science | Registered | 2022 |
| MODELHUB 1902129 · TMA1142214 | Owner not shown | 38 Telecommunications41 Education42 Science | Registered | 2022 |
| METALVAULT 1901125 · TMA1103388 | Metallicus, Inc. | 36 Finance42 Science | Registered | 2021 |