| MICROFORM 1890788 · TMA1068058 · design | Wallner Expac, Inc. | 6 Metal | Registered | 2020 |
| Microbarber 2039372 · TMA1270748 | an individual | 44 Medical | Registered | 2024 |
| MICROFORUM 1808075 · TMA997465 | YPO, Inc. | 45 Legal | Registered | 2018 |
| MICROFORUM 1240127 · TMA653502 | Microforum Ltd. | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2005 |
| MicroPower 1158296 · TMA602542 | Hydrofarm, LLC | 1 Chemicals31 Fresh | Registered | 2004 |
| MICROFOAM 1106978 · TMA615643 | Pregis Innovative Packaging LLC | 17 Rubber | Registered | 2004 |
| MICROFOAM 0502704 · TMA294105 | 3M Company (a Delaware corporation) | 5 Pharmaceuticals | Registered | 1984 |
| MICROPORE 0274344 · TMA133330 | 3M Company (a Delaware corporation) | 5 Pharmaceuticals | Registered | 1963 |
| "MICROBORE" 0193895 · UCA24888 | Microbore Tooling Systems, Ltd. | 7 Machines | Registered | 1947 |
| MICROPOWER 2157030 | an individual | 42 Science | Pending | 2021 |
| MICROFARMING 1681934 · TMA952946 | Canadian Agra Holdings Inc. | 35 Advertising36 Finance41 Education | Registered | 2016 |
| MICROVERSE 2170541 · TMA1222270 | CAN TECHNOLOGIES, INC. | 5 Pharmaceuticals | Registered | 2024 |
| MICROFROM 2057001 · TMA1153070 · design | Shenzhen Micro Innovation Industry Co.Ltd. | 9 Electronics | Registered | 2022 |
| MICROFEEL 1980447 · TMA1133821 | ALD GROUP LIMITED | 34 Tobacco | Registered | 2022 |
| MICROBYRE 1953518 · TMA1222694 | Microbyre, Inc. | 42 Science | Registered | 2024 |
| MICROFLEX 1865824 · TMA1050204 | Shure Incorporated | 9 Electronics | Registered | 2019 |
| MICROFINE 1743808 · TMA1070799 | Haddenham Healthcare Limited | 5 Pharmaceuticals9 Electronics10 Medical+2 | Registered | 2020 |
| MicroPort 1643964 · TMA1035575 | MicroPort Sinica Co. Ltd | 5 Pharmaceuticals10 Medical | Registered | 2019 |
| MICROFINE 1486205 · TMA804812 | an individual | 21 Housewares | Registered | 2011 |
| MICROFRESH 1465398 · TMA790780 | Rentokil Initial 1927 plc | 5 Pharmaceuticals11 Lighting37 Construction+1 | Registered | 2011 |
| MICROPEER 1389266 · TMA764568 | MICROPEER SOLUTIONS INC. | 9 Electronics35 Advertising37 Construction+3 | Registered | 2010 |
| MICROFLEX 1236899 · TMA731404 | MARK'S WORK WEARHOUSE LTD. | 25 Clothing | Registered | 2008 |
| MICROFLEX 1163771 · TMA606988 | EPICOR INDUSTRIES, INC. (a Delaware corporation) | 6 Metal | Registered | 2004 |
| Micropor 1128913 · TMA571096 | Melitta Europa GmbH & Co. KG | 7 Machines12 Vehicles | Registered | 2002 |
| MICROFLEX 0881452 · TMA519233 | Spectrum Brands, Inc. | 8 Hand | Registered | 1999 |