| SIMAX 1595607 · TMA871997 | LES ENTREPRISES SIMAX INC. | 1 Chemicals19 Building | Registered | 2014 |
| SIMAX 1463010 · TMA798281 | an individual | 28 Toys | Registered | 2011 |
| SIMEX 0757296 · TMA459318 | SIMEX INC. | 1 Chemicals5 Pharmaceuticals9 Electronics+4 | Registered | 1996 |
| SIMAX 0254962 · TMA118815 | Owner not shown | 9 Electronics | Registered | 1960 |
| SMX 1994160 · TMA1200946 · design | Sirius XM Radio LLC | 38 Telecommunications | Registered | 2023 |
| SIMS 1900312 · TMA1135421 · design | SPIRAX-SARCO LIMITED | 7 Machines9 Electronics11 Lighting+2 | Registered | 2022 |
| SMX 1762226 · TMA1029875 | TrueBlue Services, Inc. | 9 Electronics35 Advertising36 Finance+2 | Registered | 2019 |
| SIMS 1320902 · TMA810198 | an individual | 12 Vehicles | Registered | 2011 |
| SIMS 1314131 · TMA725155 | Flairbase inc. | 9 Electronics | Registered | 2008 |
| SIMS 1313424 · TMA803869 | an individual | 9 Electronics18 Leather25 Clothing+1 | Registered | 2011 |
| SMX 1265798 · TMA677469 | SOUDAL 'naamloze vennootschap' (joint stock company) | 1 Chemicals17 Rubber | Registered | 2006 |
| SMX 0778881 · TMA461023 | SMX PHYSICAL DISTRIBUTION INC. | 35 Advertising39 Transport | Registered | 1996 |
| SMX 0622860 · TMA369278 · design | AIDA ENGINEERING, LTD. | 7 Machines | Registered | 1990 |
| SIMS 0572814 · TMA348525 · design | an individual | 28 Toys | Registered | 1988 |
| SIMS 0453275 · TMA263800 | Sims Cab Depot Corp. | 6 Metal12 Vehicles | Registered | 1981 |
| SIMG 2231908 · design | SimG. Co., Ltd. | 9 Electronics | Pending | 2022 |
| SKIMAX 1124698 · TMA601538 · design | YACO GmbH | 28 Toys | Registered | 2004 |
| SIEMAX 1014565 · TMA540816 | TE Connectivity Solutions GmbH | 9 Electronics | Registered | 2001 |
| SWIMEX 0597099 · TMA357738 | SwimEx, Inc. (a Rhode Island Corporation) | 28 Toys | Registered | 1989 |
| SIMMAX 0534324 · TMA309861 | Simson-Maxwell, a partnership consisting of M.C. Brown Agencies and Simson-Maxwell Ltd. | 7 Machines9 Electronics | Registered | 1985 |
| symex 2162654 · TMA1271062 | symex GmbH & Co. KG | 7 Machines | Registered | 2024 |
| SINCX 2148726 · TMA1227961 · design | SincX Technologies Inc. | 35 Advertising41 Education42 Science | Registered | 2024 |
| SINCX 2140667 · TMA1227928 | SincX Technologies Inc. | 41 Education42 Science | Registered | 2024 |
| SKIMS 2006176 · TMA1250669 · design | Skims Body, Inc. | 3 Cosmetics18 Leather25 Clothing+1 | Registered | 2024 |
| SKIMS 2006172 · TMA1250666 | Skims Body, Inc. | 3 Cosmetics18 Leather25 Clothing+1 | Registered | 2024 |