| MASTERFLEXLIVE 1934306 · TMA1157657 | Masterflex, LLC | 9 Electronics42 Science | Registered | 2022 |
| MASTERFLEXLIVE 1926093 · TMA1167360 | Masterflex, LLC | 7 Machines9 Electronics17 Rubber+1 | Registered | 2023 |
| Masterplug 2244759 · TMA1263206 | Owner not listed | 28 Toys | Registered | 2024 |
| MASTERLISE 2199165 · TMA1222519 · design | Kabushiki Kaisha Bandai Spirits(Bandai Spirits Co. Ltd.) | 28 Toys | Registered | 2024 |
| MYSTERIUM 2133662 · TMA1243821 · design | an individual | 28 Toys | Registered | 2024 |
| MASTERMEDI 2086173 · TMA1170080 | an individual | 10 Medical | Registered | 2023 |
| MASTERSENSE 2071680 · TMA1135873 | Masterflex, LLC | 7 Machines9 Electronics17 Rubber | Registered | 2022 |
| MYSTERIUM 2025083 · TMA1156162 | Owner not shown | 28 Toys41 Education | Registered | 2022 |
| MASTERFLEX 2007072 · TMA1141074 | ALLPRO CORPORATION | 16 Paper | Registered | 2022 |
| MASTERTRIM 1822132 · TMA1036314 | Siemens Industry Software Inc. | 9 Electronics | Registered | 2019 |
| MASTERLINER 1771062 · TMA1030517 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERCEM 1695031 · TMA934139 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2016 |
| MASTERCLOUD 1648643 · TMA1107327 | Mastercard International Incorporated | 9 Electronics16 Paper35 Advertising+5 | Registered | 2021 |
| MASTERLINE 1623336 · TMA890007 | ES OpCo USA LLC | 5 Pharmaceuticals7 Machines8 Hand+3 | Registered | 2014 |
| MASTERELITE 1593891 · TMA939389 | BMIC LLC | 37 Construction | Registered | 2016 |
| MASTERPLAN 1561662 · TMA910561 | Masterfeeds Inc. | 5 Pharmaceuticals | Registered | 2015 |
| MASTERFINISH 1559185 · TMA894277 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERLIFE 1528289 · TMA823668 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2012 |
| MASTERCLIC 1470189 · TMA817017 · design | MeisterWerke Schulte GmbH | 19 Building27 Carpets | Registered | 2012 |
| MASTERCLIC 1470184 · TMA817242 | MeisterWerke Schulte GmbH | 19 Building27 Carpets | Registered | 2012 |
| MASTERLINK 1444698 · TMA772786 | Longyear TM, Inc. | 7 Machines | Registered | 2010 |
| Mastergreen 1408896 · TMA778233 | an individual | 17 Rubber23 Yarns27 Carpets | Registered | 2010 |
| MASTERGRAIN 1395723 · TMA753291 | WEBER MANUFACTURING TECHNOLOGIES INC. a legal entity | 6 Metal19 Building | Registered | 2009 |
| MASTERLIFT 1345681 · TMA793832 · design | MASTERLIFT INC. | 7 Machines8 Hand12 Vehicles+3 | Registered | 2011 |
| MASTERLIFT 1345680 · TMA793833 | MASTERLIFT INC. | 7 Machines8 Hand12 Vehicles+3 | Registered | 2011 |