| STROS 1599201 · TMA935821 · design | Owner not shown | 6 Metal7 Machines | Registered | 2016 |
| STROSS 1570856 · TMA864493 | STRUCTURES STROSS INC. | 19 Building35 Advertising | Registered | 2013 |
| STROS 2031542 | an individual | 6 Metal7 Machines37 Construction | Pending | 2020 |
| 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 |
| STRACE 1794409 · TMA981289 · design | DDK Group Co. Ltd. Taiwan Branch | 12 Vehicles | Registered | 2017 |
| STRUCT 1715663 · TMA957060 | MASCO CANADA LIMITED | 11 Lighting | Registered | 2016 |
| STRECK 1497646 · TMA835564 | Streck LLC | 1 Chemicals | Registered | 2012 |
| STRICT 1418064 · TMA757885 | iP Group Ltd. | 9 Electronics | Registered | 2010 |
| STRESS 0856676 · TMA521015 · design | ANN WELSH COMMUNICATIONS INC. | 35 Advertising36 Finance38 Telecommunications+2 | Registered | 2000 |
| 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 |
| STRICH 2325640 | Strich Technology CO, Limited | 15 Musical | Pending | 2024 |
| STEROCEL 1208315 · TMA671870 | celt corporation | 5 Pharmaceuticals35 Advertising | Registered | 2006 |
| STORIES 2132571 · TMA1193850 | Facebook Technologies, LLC | 9 Electronics | Registered | 2023 |
| STORIES 2132565 · TMA1193848 | Facebook Technologies, LLC | 9 Electronics38 Telecommunications41 Education+1 | Registered | 2023 |
| STREAKS 2045456 · TMA1166558 | Crunchy Bagel Pty Ltd | 9 Electronics | Registered | 2023 |
| STOROSO 2008972 · TMA1107569 | an individual | 5 Pharmaceuticals | Registered | 2021 |
| STARGUS 1870706 · TMA1070769 | PRO FARM GROUP, INC. | 5 Pharmaceuticals | Registered | 2020 |
| STRASSA 1793985 · TMA990162 | KIMBALL INTERNATIONAL, INC. | 20 Furniture | Registered | 2018 |
| SATRICO 1754558 · TMA1008865 · design | Owner not shown | 33 Wine | Registered | 2018 |
| STARSYS 1496298 · TMA834138 | InterMetro Industries Corporation | 10 Medical12 Vehicles20 Furniture | Registered | 2012 |