| SATEC 0332527 · TMA177253 | SATEC SYSTEMS, INC. | 1 Chemicals2 Paints5 Pharmaceuticals+4 | Registered | 1971 |
| STC 2151461 · TMA1231143 · design | CHAUSSURES RÉGENCE INC. | 9 Electronics | Registered | 2024 |
| STSC 1903350 · TMA1178105 · design | Board of Certified Safety Professionals, Inc. | 42 Science45 Legal | Registered | 2023 |
| STAC 1771102 · TMA1017996 | Canadian Telecommunications Association/Association Canadienne des télécommunications | 9 Electronics14 Jewellery16 Paper+6 | Registered | 2019 |
| STAC 1718876 · TMA945664 | STAC, INC. | 7 Machines37 Construction40 Treatment+1 | Registered | 2016 |
| STC 1504576 · TMA808890 · design | CHAUSSURES RÉGENCE INC. | 9 Electronics | Registered | 2011 |
| STC 1245376 · TMA663253 · design | Securities Training Corporation, a New York Corporation | 9 Electronics16 Paper41 Education | Registered | 2006 |
| STC 1245134 · TMA690974 | Securities Training Corporation, a New York Corporation | 9 Electronics16 Paper | Registered | 2007 |
| STC 1169684 · TMA651876 · design | STC Global Impex (Canada) Ltd. a corporation incorporated under the laws of the Province of Ontario | 12 Vehicles17 Rubber | Registered | 2005 |
| STEX 1067138 · TMA581989 | ABB Asea Brown Boveri Ltd. | 9 Electronics | Registered | 2003 |
| STC 0802535 · TMA473339 | SECURITIES TRAINING CORPORATION, (NEW YORK CORPORATION) | 41 Education | Registered | 1997 |
| STAC 2036387 · design | Owner not shown | 6 Metal35 Advertising42 Science | Pending | 2020 |
| SOTECH 2150506 · TMA1204306 · design | Sunmate Industrial Company Limited | 21 Housewares | Registered | 2023 |
| SOTECH 2150505 · TMA1204305 · design | Sunmate Industrial Company Limited | 8 Hand | Registered | 2023 |
| STEICO 2004435 · TMA1211570 | an individual | 1 Chemicals8 Hand17 Rubber+4 | 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 |
| SKYTEC 1794973 · TMA1034653 | Globus (Shetland) Limited | 9 Electronics | Registered | 2019 |
| SITECH 1435176 · TMA791978 · design | Trimble Inc. | 37 Construction38 Telecommunications41 Education+1 | Registered | 2011 |
| SITECH 1434500 · TMA791977 | Trimble Inc. | 37 Construction38 Telecommunications41 Education+1 | Registered | 2011 |
| SOITEC 1162218 · TMA635175 | Soitec | 1 Chemicals9 Electronics11 Lighting+4 | Registered | 2005 |
| STECKO 0353355 · TMA193840 · design | PARKER INTANGIBLES LLC a Delaware limited liability company | 6 Metal9 Electronics | Registered | 1973 |
| SeaTec 2346282 | Vouvray Acquisition Limited | 9 Electronics35 Advertising37 Construction+5 | Pending | 2023 |
| SITECO 2334016 | Siteco GmbH | 9 Electronics11 Lighting37 Construction+1 | Pending | 2024 |
| STEECO 2269115 | Owner not listed | 6 Metal7 Machines40 Treatment+1 | Pending | 2023 |