| MICROSOLV 1925493 · TMA1117222 | Flotek Chemistry, LLC | 1 Chemicals | Registered | 2022 |
| MicroSilver 1649499 · TMA943115 | an individual | 3 Cosmetics35 Advertising | Registered | 2016 |
| MICROSOL 1870072 · TMA1081290 | an individual | 35 Advertising40 Treatment41 Education+1 | Registered | 2020 |
| Microsolar 1433090 · TMA817172 | an individual | 11 Lighting37 Construction | Registered | 2012 |
| MICROSERVE 0606159 · TMA354998 | 341234 B.C. LTD. | 35 Advertising37 Construction | Registered | 1989 |
| MicroGold 2125728 · TMA1252151 | Granite Gold, Inc. | 5 Pharmaceuticals | Registered | 2024 |
| MICROSAFE 1995856 · TMA1102986 | DRUMMOND SCIENTIFIC COMPANY | 10 Medical | Registered | 2021 |
| MicroCote 1914805 · TMA1191249 | DyTerra Corporation | 7 Machines | Registered | 2023 |
| MICROSILK 1867357 · TMA1162881 | Bolt Threads, Inc. | 22 Ropes23 Yarns24 Textiles+1 | Registered | 2023 |
| MICROSILK 1713796 · TMA940005 · design | American Industrial Brands, LLC | 11 Lighting | Registered | 2016 |
| MICROCORE 1655866 · TMA921511 | an individual | 7 Machines8 Hand | Registered | 2015 |
| MICROSOFT 1590964 · TMA993309 · design | Microsoft Corporation | 9 Electronics16 Paper25 Clothing+8 | Registered | 2018 |
| MICROSUL 1588439 · TMA861154 | Corteva Agriscience LLC | 1 Chemicals | Registered | 2013 |
| MICROZONE 1520480 · TMA847937 | Span Tech LLC | 7 Machines | Registered | 2013 |
| MICROSLICE 1499532 · TMA823152 | BANK OF AMERICA CORPORATION (a Delaware Corporation) | 36 Finance | Registered | 2012 |
| MICROSILK 1491245 · TMA839241 | American Industrial Brands, LLC | 10 Medical11 Lighting | Registered | 2013 |
| MICROSONIC 1403233 · TMA803762 | POSITEC GROUP LIMITED, a legal entity | 7 Machines | Registered | 2011 |
| MICROSIL 1401106 · TMA801045 | Sun Chemical Corporation | 1 Chemicals | Registered | 2011 |
| MICROSOFT 1179215 · TMA614880 | Microsoft Corporation | 36 Finance37 Construction40 Treatment | Registered | 2004 |
| MICROSPLIT 1144887 · TMA608431 | LVMH SWISS MANUFACTURES SA | 14 Jewellery | Registered | 2004 |
| MICROCLAVE 1139140 · TMA647744 | ICU Medical, Inc. | 10 Medical | Registered | 2005 |
| MICROSAVER 1110428 · TMA580377 | ACCO Brands Corporation | 9 Electronics | Registered | 2003 |
| MICROSLICE 1086193 · TMA589487 | URSCHEL LABORATORIES INCORPORATED | 7 Machines | Registered | 2003 |
| MICROSULIS 1006093 · TMA539210 | UK Investment Associates, LLC | 10 Medical | Registered | 2001 |
| MICROSURE 0840940 · TMA543356 | MICROBAN CANADA INC. | 5 Pharmaceuticals | Registered | 2001 |