| MICROCISE 1474050 · TMA861068 | Cook Medical Technologies LLC | 9 Electronics | Registered | 2013 |
| Microcidin 1796938 · TMA982624 | Naturo Aid Pharmaceutical Inc. | 5 Pharmaceuticals | Registered | 2017 |
| MICROGLIDE 1719784 · TMA941742 | Secure Energy Services Inc. | 4 Oils | Registered | 2016 |
| MicroGuide 1582709 · TMA858630 | MEGLAB ÉLECTRONIQUE INC. | 9 Electronics | Registered | 2013 |
| MICROGLIDE 1167116 · TMA659756 | Radius Systems Limited | 6 Metal9 Electronics17 Rubber+2 | Registered | 2006 |
| MICROGLIDE 0608035 · TMA373746 | Abbott Cardiovascular Systems Inc. | 10 Medical | Registered | 1990 |
| MicroCote 1914805 · TMA1191249 | DyTerra Corporation | 7 Machines | Registered | 2023 |
| MICROCORE 1655866 · TMA921511 | an individual | 7 Machines8 Hand | Registered | 2015 |
| MicroCage 1582713 · TMA858621 | MEGLAB ÉLECTRONIQUE INC. | 9 Electronics | Registered | 2013 |
| MICROSIZE 0719049 · TMA472932 | Nagel Precision Inc. | 7 Machines | Registered | 1997 |
| MICROCURE 2316870 · design | Microcure(Suzhou) Medical Technology Co. Ltd. | 10 Medical | Pending | 2024 |
| MICROCARE 2213292 | Thor Specialities (UK) Ltd | 1 Chemicals | Pending | 2022 |
| MICROCHOICE 0731832 · TMA469805 | LINVATEC CORPORATION | 10 Medical | Registered | 1997 |
| MICROCHILL 1614127 · TMA928953 | an individual | 9 Electronics18 Leather25 Clothing+3 | Registered | 2016 |
| MICROGÀRDE 1575328 · TMA874357 · design | an individual | 5 Pharmaceuticals | Registered | 2014 |
| MICROSLICE 1499532 · TMA823152 | BANK OF AMERICA CORPORATION (a Delaware Corporation) | 36 Finance | Registered | 2012 |
| MICROCLAVE 1139140 · TMA647744 | ICU Medical, Inc. | 10 Medical | Registered | 2005 |
| MICROSLICE 1086193 · TMA589487 | URSCHEL LABORATORIES INCORPORATED | 7 Machines | Registered | 2003 |
| MICROCYCLE 0840667 · TMA491264 | Graphic Packaging International Canada, ULC | 16 Paper | Registered | 1998 |
| MICROSIZED 0449092 · TMA248516 | CARGILL INCORPORATED (A DELAWARE CORPORATION) | 30 Coffee31 Fresh | Registered | 1980 |
| MICROAGE 2132041 · TMA1195823 | FRONTIER TECHNOLOGY, LLC, LIMITED LIABILITY COMPANY ARIZONA | 37 Construction42 Science | Registered | 2023 |
| MICROCUT 2089261 · TMA1189316 | an individual | 12 Vehicles24 Textiles | Registered | 2023 |
| MICROCNX 2057831 · TMA1145957 | COLDER PRODUCTS COMPANY | 17 Rubber | Registered | 2022 |
| MICROSAFE 1995856 · TMA1102986 | DRUMMOND SCIENTIFIC COMPANY | 10 Medical | Registered | 2021 |
| MICROCON 1920613 · TMA1101845 · design | RGF Environmental Group, Inc. | 11 Lighting | Registered | 2021 |