| SILICALIT 2279767 | SPI Pharma, Inc. | 1 Chemicals | Pending | 2023 |
| SILKLIFT 1889161 · TMA1083731 | Prollenium Medical Technologies, Inc. | 10 Medical41 Education44 Medical | Registered | 2020 |
| SILKLIFT 1531802 · TMA826994 | Kao Kabushiki Kaisha, also trading as Kao Corporation | 3 Cosmetics | Registered | 2012 |
| SILKLIFT 1302474 · TMA688319 | Prollenium Medical Technologies, Inc. | 44 Medical | Registered | 2007 |
| SILICOLLOY 2015449 · TMA1141162 | Silicolloy Lab Co., Ltd. | 6 Metal28 Toys | Registered | 2022 |
| SILICOL 1921940 · TMA1107656 | FW Medical Limited | 3 Cosmetics5 Pharmaceuticals | Registered | 2021 |
| SILCOLAST 1811088 · TMA1101124 | Trelleborg Sealing Solutions GmbH | 17 Rubber40 Treatment42 Science | Registered | 2021 |
| SILICOIL 1616292 · TMA891531 | The Lion Company, Incorporated | 6 Metal20 Furniture | Registered | 2014 |
| SILIKAL 1146404 · TMA694426 | SILIKAL GMBH (a German limited liability company) | 19 Building | Registered | 2007 |
| Siligli 2185552 | Qingdao Naland Cosmetics Co. Ltd | 20 Furniture21 Housewares | Pending | 2022 |
| SILACALM 1961787 | American Nano, LLC | 3 Cosmetics5 Pharmaceuticals35 Advertising | Pending | 2019 |
| SilkSilky 2223790 · TMA1249991 | SILKSILKY INC. | 24 Textiles | Registered | 2024 |
| SKILLICKLES 2172533 · TMA1222374 · design | an individual | 41 Education42 Science | Registered | 2024 |
| #Showlocalove 2149044 · TMA1205216 | Factor 5 Group Inc. | 35 Advertising | Registered | 2023 |
| SoulCall 2125414 · TMA1197809 | an individual | 25 Clothing | Registered | 2023 |
| SoulEquilibrium 2115039 · TMA1187493 | an individual | 41 Education | Registered | 2023 |
| SOLUGEL 2114483 · TMA1228778 | an individual | 1 Chemicals3 Cosmetics5 Pharmaceuticals+3 | Registered | 2024 |
| SOILSHIELD 2088238 · TMA1173563 · design | ENGINEERED FLOORS, LLC | 1 Chemicals27 Carpets | Registered | 2023 |
| SOILCLOUD 2085487 · TMA1268221 · design | Owner not shown | 42 Science | Registered | 2024 |
| Silkland 2081145 · TMA1181516 | Shenzhen Guanhai Technology Co. Ltd. | 9 Electronics | Registered | 2023 |
| SILKLETTE 2044723 · TMA1144773 | an individual | 25 Clothing | Registered | 2022 |
| SalesLoft 2003469 · TMA1137313 | Salesloft, Inc. | 9 Electronics42 Science | Registered | 2022 |
| SOLUCELLAIR 2002227 · TMA1127141 | Owner not shown | 22 Ropes23 Yarns24 Textiles | Registered | 2022 |
| SoulSalt 1951069 · TMA1122911 | SoulSalt, Inc. | 45 Legal | Registered | 2022 |
| SALESLEEVE 1862034 · TMA1059728 | Vitito Intellectual Property LLC | 16 Paper | Registered | 2019 |