| SKYTRACK 1612122 · TMA889721 | TCB Welding and Construction Ltd | 9 Electronics | Registered | 2014 |
| SKYTRACE 1905878 · TMA1093527 | Enviro Trace Ltd. | 42 Science | Registered | 2021 |
| SKYTRAC 1549910 · TMA877816 | Skytrac Systems Ltd. | 9 Electronics37 Construction42 Science | Registered | 2014 |
| SKYTRAK 1245801 · TMA688137 | JLG Industries, Inc. (a Pennsylvania corporation) | 7 Machines | Registered | 2007 |
| SKYTRAK 0427641 · TMA241374 | JLG Industries, Inc. (a Pennsylvania corporation) | 12 Vehicles | Registered | 1980 |
| SKYTREK 1535933 · TMA873430 | SKYTREK ADVENTURE PARK LTD | 9 Electronics16 Paper18 Leather+6 | Registered | 2014 |
| STROCS 2252280 · TMA1270230 | an individual | 25 Clothing | Registered | 2024 |
| STREAKS 2045456 · TMA1166558 | Crunchy Bagel Pty Ltd | 9 Electronics | Registered | 2023 |
| STRUCK 1941081 · TMA1149533 | C.F. STRUCK CORP. | 7 Machines12 Vehicles | Registered | 2022 |
| STRECK 1857505 · TMA1093540 · design | Streck LLC | 1 Chemicals5 Pharmaceuticals9 Electronics+1 | Registered | 2021 |
| STRECK 1857504 · TMA1074515 · design | Streck LLC | 1 Chemicals5 Pharmaceuticals9 Electronics+1 | Registered | 2020 |
| STARKS 1855959 · TMA1024719 · design | Starks Barber Corporation | 3 Cosmetics8 Hand20 Furniture+3 | Registered | 2019 |
| STRACE 1794409 · TMA981289 · design | DDK Group Co. Ltd. Taiwan Branch | 12 Vehicles | Registered | 2017 |
| SkyTrix 1631833 · TMA896089 | Daydream Toys LLC | 28 Toys | Registered | 2015 |
| STRECK 1497646 · TMA835564 | Streck LLC | 1 Chemicals | Registered | 2012 |
| SKITRAX 1464463 · TMA834164 | Owner not shown | 17 Rubber19 Building27 Carpets+2 | Registered | 2012 |
| STRAUSS 1350629 · TMA764538 | Leviton Manufacturing Co. Inc. a corporation organized and existing under the laws of the State of Delaware | 9 Electronics | Registered | 2010 |
| STRAUSS 1347838 · TMA783868 · design | STRAUSS GROUP LTD. | 29 Meat30 Coffee31 Fresh | Registered | 2010 |
| STRICK 0645155 · TMA378956 | Strick Trailers, LLC | 12 Vehicles | Registered | 1991 |
| STRICK 0644625 · TMA385726 · design | Strick Trailers, LLC | 6 Metal12 Vehicles | Registered | 1991 |
| STRASS 0528575 · TMA358471 · design | an individual | 11 Lighting | Registered | 1989 |
| STRASS 0396081 · TMA226063 | an individual | 11 Lighting | Registered | 1978 |
| STRAKE 2257508 | STRAKE TECHNOLOGIES, INC. | 42 Science | Pending | 2023 |
| SITRAS 2227010 | an individual | 9 Electronics | Pending | 2022 |
| SKtrees 2065971 | an individual | 9 Electronics28 Toys | Pending | 2020 |