| SINCERITY 1945762 · TMA1145047 | Justin Alexander, Inc. | 25 Clothing | Registered | 2022 |
| SINCERE 2292784 · design | Owner not listed | 9 Electronics35 Advertising36 Finance+2 | Pending | 2023 |
| Sincere 2290964 | an individual | 35 Advertising | Pending | 2023 |
| SYNCRONIZER 1030161 · TMA544963 | Hayes Towing Electronics, LLC | 12 Vehicles | Registered | 2001 |
| SUNCREAT 2341935 · TMA1279686 | Jarder Home Ningbo CO. Ltd | 11 Lighting20 Furniture22 Ropes | Registered | 2024 |
| SUNSCRUB 2296686 · TMA1266098 | Owner not listed | 37 Construction | Registered | 2024 |
| Sumekar 2267351 · TMA1276561 | Shenzhen Mingsen Creative Network Technology Co. Ltd. | 9 Electronics | Registered | 2024 |
| Smasrob 2263727 · TMA1283316 | an individual | 18 Leather | Registered | 2025 |
| SNEAKERSPOON 2248572 · TMA1263291 | Owner not listed | 21 Housewares | Registered | 2024 |
| SYNCHROSHIELDREPAIR 2242833 · TMA1258426 · design | SHISEIDO COMPANY, LIMITED | 3 Cosmetics | Registered | 2024 |
| SKINGUARD 2222435 · TMA1252502 | Kimberly-Clark Worldwide, Inc. | 5 Pharmaceuticals | Registered | 2024 |
| Snowcrash 2209753 · TMA1282859 | an individual | 9 Electronics42 Science | Registered | 2025 |
| SWINGER 2208193 · TMA1241598 | FCA US LLC | 12 Vehicles | Registered | 2024 |
| sincreative 2205094 · TMA1240136 | Dongguan Haixun e-commerce Co., Ltd | 11 Lighting | Registered | 2024 |
| SUNGROW 2196272 · TMA1280779 · design | Sungrow Power Supply Co. Ltd. | 9 Electronics | Registered | 2025 |
| Synchronika 2191138 · TMA1261269 | ECM Espresso Coffee Machines Manufacture GmbH | 11 Lighting | Registered | 2024 |
| SNEAKERFISH 2184413 · TMA1261229 | Creative Track Inc. | 9 Electronics16 Paper28 Toys+1 | Registered | 2024 |
| SKINGUARD 2184180 · TMA1230530 | Kimberly-Clark Worldwide, Inc. | 5 Pharmaceuticals | Registered | 2024 |
| Sunssar 2179763 · TMA1183260 | Shenzhen Xincheng Times Technology Co. Ltd. | 35 Advertising | Registered | 2023 |
| Sengrovii 2170387 · TMA1205436 | Owner not shown | 5 Pharmaceuticals | Registered | 2023 |
| Sengrovi 2170386 · TMA1205435 | Owner not shown | 5 Pharmaceuticals | Registered | 2023 |
| SNOWCRAFT 2170154 · TMA1169170 | SAULE LLC | 9 Electronics | Registered | 2023 |
| SIMCERE 2168778 · TMA1282575 · design | Jiangsu Simcere Pharmaceutical Co. Ltd | 5 Pharmaceuticals | Registered | 2025 |
| SYNCHROLOCK 2158643 · TMA1209911 · design | Incubico Limited | 9 Electronics | Registered | 2023 |
| SINCERO 2152733 · TMA1189900 · design | an individual | 30 Coffee | Registered | 2023 |