| MASTECH 2025313 · TMA1158916 · design | MGL Global Solutions Limited | 9 Electronics | Registered | 2023 |
| MASTECH 1233768 · TMA727358 | MGL Global Solutions Limited | 9 Electronics | Registered | 2008 |
| MASTECH 1229592 · TMA727691 · design | MGL Global Solutions Limited | 9 Electronics | Registered | 2008 |
| MASTEC 1075191 · TMA628530 · design | Mastec, Inc. (a Florida corporation) | 37 Construction42 Science | Registered | 2004 |
| MASTECH 0780351 · TMA468030 | an individual | 37 Construction42 Science | Registered | 1996 |
| MAGSTACKERS 2350737 · design | Owner not listed | 28 Toys | Pending | 2024 |
| MAGSTACKERS 2350736 | Owner not listed | 28 Toys | Pending | 2024 |
| MISTIX 2262057 · TMA1284714 · design | an individual | 10 Medical20 Furniture28 Toys | Registered | 2025 |
| MIUCATCH 2261125 · TMA1279554 · design | Meizhai (Xiamen) Technology Co. Ltd. | 18 Leather | Registered | 2024 |
| MGTECH 2260591 · TMA1279483 | an individual | 21 Housewares | Registered | 2024 |
| MYCTCENTRAL 2247323 · TMA1224685 | Myonex, Inc. | 35 Advertising | Registered | 2024 |
| MIGHTYCALL 2241517 · TMA1260415 | CALLCURRENT, INC. | 42 Science | Registered | 2024 |
| Moxietec 2211577 · TMA1279042 | Moxietec, LLC | 7 Machines40 Treatment42 Science | Registered | 2024 |
| Mestica 2210615 · TMA1244146 | GUANGZHOU YUETENG E-COMMERCE CO. LTD. | 11 Lighting | Registered | 2024 |
| MCDC 2200269 · TMA1238554 | an individual | 9 Electronics | Registered | 2024 |
| MESTEK 2184689 · TMA1231391 | Shenzhen Mestek Electronics Co. Ltd. | 9 Electronics | Registered | 2024 |
| MASTIGRAM+ 2180782 · TMA1212520 | Zoetis Services LLC | 5 Pharmaceuticals10 Medical | Registered | 2023 |
| MACTAC 2180397 · TMA1212503 · design | MORGAN ADHESIVES COMPANY LLC | 1 Chemicals17 Rubber | Registered | 2023 |
| MACTAC 2168349 · TMA1167267 · design | MORGAN ADHESIVES COMPANY LLC | 17 Rubber | Registered | 2023 |
| MEIJITECHNO 2122352 · TMA1169021 · design | MEIJI TECHNO CO. LTD. | 9 Electronics | Registered | 2023 |
| MISTYCIDE 2120943 · TMA1229928 | Owner not shown | 5 Pharmaceuticals11 Lighting | Registered | 2024 |
| MISTICIDE 2120942 · TMA1229927 | Owner not shown | 5 Pharmaceuticals11 Lighting | Registered | 2024 |
| MOSTIGLASS 2120729 · TMA1167171 | GOCAP | 24 Textiles | Registered | 2023 |
| MaxTac 2119175 · TMA1180731 | SCHAEFFLER TECHNOLOGIES AG & CO. KG | 7 Machines17 Rubber | Registered | 2023 |
| maxtigers 2116894 · TMA1195522 | Dongguan Yinggongde E-Commerce Co., Ltd. | 7 Machines8 Hand12 Vehicles+2 | Registered | 2023 |