| MASTERING 1765479 · TMA1017111 | PEARSON EDUCATION, INC. | 9 Electronics41 Education42 Science | Registered | 2019 |
| MASTERMIND 2067918 · TMA1135817 | Mastery Logistics Systems, Inc. | 42 Science | Registered | 2022 |
| MASTERLINE 1623336 · TMA890007 | ES OpCo USA LLC | 5 Pharmaceuticals7 Machines8 Hand+3 | Registered | 2014 |
| MASTERLINK 1444698 · TMA772786 | Longyear TM, Inc. | 7 Machines | Registered | 2010 |
| MASTERLINE 1300008 · TMA753125 | BEAULIEU GROUP, LLC | 27 Carpets | Registered | 2009 |
| MASTERMIND 1010294 · TMA725342 | MASTERMIND TOYS INC. | 35 Advertising | Registered | 2008 |
| MASTERMIND 0875302 · TMA612504 | HASBRO , INC., A RHODE ISLAND CORPORATION | 9 Electronics28 Toys | Registered | 2004 |
| MASTERTINT 0722282 · TMA432763 | Axalta Coating Systems GmbH | 1 Chemicals2 Paints3 Cosmetics | Registered | 1994 |
| MASTERMIND 0596468 · TMA349347 | MASTERMIND TOYS INC. | 35 Advertising37 Construction41 Education | Registered | 1988 |
| MASTERMIND 0449171 · TMA270675 | HASBRO , INC., A RHODE ISLAND CORPORATION | 28 Toys | Registered | 1982 |
| MASTERMIND 0412143 · TMA267720 | HASBRO , INC., A RHODE ISLAND CORPORATION | 28 Toys | Registered | 1982 |
| MASTERMIND 0412142 · TMA267719 · design | HASBRO , INC., A RHODE ISLAND CORPORATION | 28 Toys | Registered | 1982 |
| MASTERMIND 2328422 | The Youth Effect Inc. | – | Pending | 2024 |
| MASTERLINER 1771062 · TMA1030517 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERGRAIN 1395723 · TMA753291 | WEBER MANUFACTURING TECHNOLOGIES INC. a legal entity | 6 Metal19 Building | Registered | 2009 |
| MASTERJOINT 2332639 | Construction Research & Technology GmbH | 2 Paints17 Rubber19 Building | Pending | 2024 |
| MasterShine 2272892 | Owner not listed | 37 Construction | Pending | 2023 |
| MYSTERIA 2258106 · TMA1241970 | Owner not listed | 31 Fresh | Registered | 2024 |
| 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 |
| MasterFit 2069039 · TMA1158318 | Yiwu Zhaoen Sports Goods Co. Ltd. | 28 Toys | Registered | 2022 |
| MYSTERIUM 2025083 · TMA1156162 | Owner not shown | 28 Toys41 Education | Registered | 2022 |
| Misterio 1995172 · TMA1227613 | VICOSTONE JOINT STOCK COMPANY | 19 Building20 Furniture | Registered | 2024 |
| MASTERPAN 1964676 · TMA1178188 | an individual | 21 Housewares | Registered | 2023 |