| STEMSPAN 1725234 · TMA956181 | STEMCELL Technologies Canada Inc. | 1 Chemicals5 Pharmaceuticals | Registered | 2016 |
| STEAMSAVER 1425099 · TMA852735 | Cleveland Range, LLC | 11 Lighting | Registered | 2013 |
| STEMSCOPES 2023660 · TMA1265052 | Accelerate Learning Inc. | 9 Electronics16 Paper41 Education | Registered | 2024 |
| Stemkey 1669726 · TMA924504 | an individual | 5 Pharmaceuticals | Registered | 2015 |
| StemSport 1459543 · TMA787894 | StemTech HealthSciences, Inc. | 5 Pharmaceuticals | Registered | 2011 |
| STEAMSENSE 1356569 · TMA728981 | LG ELECTRONICS INC. | 7 Machines11 Lighting | Registered | 2008 |
| STEMCELEX 1333256 · TMA792840 | Island Laboratories Inc. | 3 Cosmetics5 Pharmaceuticals | Registered | 2011 |
| STEAMSENSE 1274370 · TMA726280 | LG ELECTRONICS INC. | 7 Machines11 Lighting | Registered | 2008 |
| STEMSEP 0800717 · TMA506325 | STEMCELL Technologies Canada Inc. | 1 Chemicals7 Machines | Registered | 1999 |
| STEAMSENE 2343549 · design | Owner not listed | 21 Housewares28 Toys | Pending | 2024 |
| STEAMSCAPE 2305758 | Delta Faucet Company | 9 Electronics11 Lighting | Pending | 2024 |
| STIMSEARCH 2289024 | an individual | 9 Electronics10 Medical | Pending | 2023 |
| STENOGRAPH 2325260 · TMA1250370 · design | an individual | 9 Electronics16 Paper38 Telecommunications+2 | Registered | 2024 |
| SAOTANGTUI 2236523 · TMA1269889 · design | Owner not listed | 43 Restaurants | Registered | 2024 |
| STEAMCRISP 2236399 · TMA1256903 | SharkNinja Operating LLC | 11 Lighting | Registered | 2024 |
| SIUDANGKA 2232700 · TMA1256610 | an individual | 21 Housewares | Registered | 2024 |
| SITTINGSUITS 2226994 · TMA1243359 | an individual | 24 Textiles25 Clothing | Registered | 2024 |
| SATONAZAL 2225919 · TMA1250211 | Sato Pharmaceutical Co. Ltd. | 5 Pharmaceuticals | Registered | 2024 |
| SKATINGER 2223091 · TMA1272702 · design | Weihai Skatinger Outdoor Products Co. Ltd. | 28 Toys | Registered | 2024 |
| SWTYMIKI 2212820 · TMA1243173 | Changsha Yuanshangcao Technology Co.,Ltd. | 20 Furniture21 Housewares | Registered | 2024 |
| StangH 2201338 · TMA1210198 | Hangzhou Sitang Technology Co.Ltd | 20 Furniture24 Textiles27 Carpets | Registered | 2023 |
| STANGH 2201336 · TMA1210197 · design | Hangzhou Sitang Technology Co.Ltd | 20 Furniture24 Textiles27 Carpets | Registered | 2023 |
| STEMZYME 2199520 · TMA1223875 | The Oncor Corp. | 44 Medical | Registered | 2024 |
| STEMZYME 2199490 · TMA1223873 | The Oncor Corp. | 3 Cosmetics | Registered | 2024 |
| STAINSHIELD 2189783 · TMA1232849 | RUBBERMAID INCORPORATED | 9 Electronics21 Housewares | Registered | 2024 |