| METERON 1460201 · TMA788335 | Meteron Inc. | 9 Electronics35 Advertising36 Finance+4 | Registered | 2011 |
| METRIN 0708030 · TMA416113 | Metrin International Products Corporation | 3 Cosmetics | Registered | 1993 |
| METRIN 0270529 · TMA130282 · design | Metrin International Products Corporation | 3 Cosmetics | Registered | 1963 |
| MATRION 1911779 · TMA1103137 | an individual | 5 Pharmaceuticals | Registered | 2021 |
| METAROM 1331491 · TMA734164 | an individual | 2 Paints30 Coffee | Registered | 2009 |
| METROHM 1235367 · TMA660225 | an individual | 9 Electronics | Registered | 2006 |
| METAROM 0869930 · TMA504091 · design | an individual | 1 Chemicals2 Paints30 Coffee | Registered | 1998 |
| MEDTRONIC 1930144 · TMA1118290 | MEDTRONIC, INC. | 1 Chemicals5 Pharmaceuticals10 Medical+2 | Registered | 2022 |
| METRONOME 1921874 · TMA1129578 | Autonomous Software, a corporation organized under the laws of Cayman Islands | 9 Electronics42 Science | Registered | 2022 |
| METRONAUT 1856447 · TMA1171770 | ANTESCOFO | 9 Electronics38 Telecommunications41 Education+1 | Registered | 2023 |
| MEDTRONIC 1763301 · TMA969478 | MEDTRONIC, INC. a Minnesota corporation | 41 Education42 Science44 Medical | Registered | 2017 |
| MEDTRONIC 1752725 · TMA948627 | MEDTRONIC, INC. a Minnesota corporation | 10 Medical | Registered | 2016 |
| METRONAPS 1654308 · TMA914264 | an individual | 7 Machines9 Electronics20 Furniture+1 | Registered | 2015 |
| METRUM 1634235 · TMA907322 | ZUMTOBEL LIGHTING GMBH | 9 Electronics11 Lighting37 Construction+1 | Registered | 2015 |
| METRONOME 1524243 · TMA876096 | NIENKAMPER FURNITURE & ACCESSORIES INC. | 20 Furniture | Registered | 2014 |
| METRONEWS 1080472 · TMA594636 · design | Owner not shown | 35 Advertising | Registered | 2003 |
| MEDTRONIC 1014096 · TMA557228 · design | MEDTRONIC, INC. a Minnesota corporation | 9 Electronics10 Medical35 Advertising+3 | Registered | 2002 |
| MOTRIN 0333871 · TMA178162 | Owner not shown | 5 Pharmaceuticals | Registered | 1971 |
| MEDTRONIC 0327848 · TMA172762 | MEDTRONIC, INC. | 5 Pharmaceuticals6 Metal7 Machines+5 | Registered | 1970 |
| METRONOME 2281571 | METRONOME TECHNOLOGIES INC. | 9 Electronics35 Advertising37 Construction+1 | Pending | 2023 |
| MOTRIN 2176811 | Owner not shown | 9 Electronics35 Advertising41 Education | Pending | 2022 |
| MYHITRON 1904108 · TMA1084857 · design | Hitron Technologies Inc. | 9 Electronics | Registered | 2020 |
| MATERION 1419038 · TMA799138 | Materion Corporation | 1 Chemicals6 Metal9 Electronics+4 | Registered | 2011 |
| METERMAN 1223998 · TMA639812 | Fluke Corporation (a Washington corporation) | 9 Electronics | Registered | 2005 |
| METROMUX 0840235 · TMA512972 | Cisco Technology, Inc. | 9 Electronics | Registered | 1999 |