| Sitek 1539100 · TMA882995 | Betek GmbH & Co. KG | 6 Metal7 Machines12 Vehicles+2 | Registered | 2014 |
| SEATEK 2043718 · TMA1203690 · design | Southwire Company, LLC, Delaware Limited Liability Company | 8 Hand | Registered | 2023 |
| SAITOS 1953338 · TMA1167401 · design | KOMATSU MATERE Co. Ltd. Japanese corporation | 24 Textiles25 Clothing | Registered | 2023 |
| SOITEC 1881425 · TMA1096531 · design | Soitec | 9 Electronics40 Treatment42 Science | Registered | 2021 |
| SCITEC 1837125 · TMA1095033 | Owner not shown | 5 Pharmaceuticals6 Metal16 Paper+11 | Registered | 2021 |
| SCITEX 1815533 · TMA1000661 | Hewlett-Packard Development Company, L.P. | 7 Machines | Registered | 2018 |
| SITES 1655244 · TMA927297 | The Board of Regents of the University of Texas System | 37 Construction42 Science44 Medical | Registered | 2016 |
| SUITEQ 1613253 · TMA872286 | SuiteQ Inc. | 35 Advertising38 Telecommunications42 Science | Registered | 2014 |
| SAITOS 1198155 · TMA677079 | KOMATSU MATERE Co. Ltd. | 18 Leather20 Furniture24 Textiles+1 | Registered | 2006 |
| SOITEC 1162218 · TMA635175 | Soitec | 1 Chemicals9 Electronics11 Lighting+4 | Registered | 2005 |
| SAYTEX 0770884 · TMA450862 | ALBEMARLE CORPORATION, (A VIRGINIA CORPORATION) | 1 Chemicals | Registered | 1995 |
| SCITEX 0498653 · TMA298951 | Hewlett-Packard Development Company a Texas limited partnership | 9 Electronics16 Paper41 Education+1 | Registered | 1985 |
| SATEC 0332527 · TMA177253 | SATEC SYSTEMS, INC. | 1 Chemicals2 Paints5 Pharmaceuticals+4 | Registered | 1971 |
| SUIDEK 2294196 · design | Owner not listed | 7 Machines9 Electronics28 Toys+1 | Pending | 2023 |
| Suiteg 2245694 | Owner not listed | 1 Chemicals29 Meat31 Fresh+4 | Pending | 2022 |
| SCHITEC 2157841 · TMA1209879 | Shenzhen Shenchuang High tech Electronics Co.Ltd | 28 Toys | Registered | 2023 |
| SqiTech 2080780 · TMA1165974 | sqitech corp. | 9 Electronics | Registered | 2023 |
| SITEKEY 1465660 · TMA784178 | BANK OF AMERICA CORPORATION (a Delaware Corporation) | 42 Science45 Legal | Registered | 2010 |
| SITCH 2249239 · TMA1269960 · design | Owner not listed | 9 Electronics | Registered | 2024 |
| SUTTIK 2118100 · TMA1211910 · design | Yiwu Waha Home Appliance Co. Ltd | 8 Hand11 Lighting | Registered | 2023 |
| SWITCH 2116465 · TMA1164955 | SPA Performance, Inc. | 35 Advertising42 Science | Registered | 2023 |
| SUITGO 2095671 · TMA1212957 | an individual | 11 Lighting | Registered | 2023 |
| SKITZO 2040781 · TMA1242251 | DACJO'S PTY LTD | 25 Clothing | Registered | 2024 |
| SWITCH 1985925 · TMA1163109 | Bombardier Recreational Products Inc. | 12 Vehicles | Registered | 2023 |
| SEADEK 1974660 · TMA1111190 · design | Hyperform, Inc. | 27 Carpets | Registered | 2021 |