| STYROBLOCK 0504446 · TMA288223 | BEAVER PLASTICS LTD. | 6 Metal8 Hand9 Electronics+9 | Registered | 1984 |
| StripLok 2052252 · TMA1128513 | Freudenberg Oil & Gas, LLC | 17 Rubber | Registered | 2022 |
| STYROPEK 1748425 · TMA1005011 · design | Owner not shown | 1 Chemicals | Registered | 2018 |
| STYROPEK 1682408 · TMA976504 | Owner not shown | 1 Chemicals | Registered | 2017 |
| STYROFLEX 1036811 · TMA570496 | INEOS Styrolution Europe GmbH | 1 Chemicals | Registered | 2002 |
| STYROBAR 0885436 · TMA531398 | AMC Foam Technologies Inc. | 17 Rubber | Registered | 2000 |
| STRIPLOK 0286039 · TMA141673 | KWIK LOK CORPORATION | 6 Metal9 Electronics | Registered | 1965 |
| STYROBORD 0260141 · TMA123263 | DDP Specialty Electronic Materials US, LLC | 17 Rubber | Registered | 1961 |
| STYROPOR 0233144 · TMA103771 | an individual | 1 Chemicals17 Rubber19 Building+2 | Registered | 1956 |
| STORYBLOCKS 2025407 · TMA1142686 | Footage Firm, Inc. | 42 Science | Registered | 2022 |
| STORYBLOCKS 1878437 · TMA1072052 | Footage Firm, Inc. | 35 Advertising45 Legal | Registered | 2020 |
| STYROFOAM 2243707 · TMA1261819 | DDP Specialty Electronic Materials US, LLC | 17 Rubber | Registered | 2024 |
| STROBE 2162432 · TMA1230103 | Owner not shown | 18 Leather25 Clothing28 Toys | Registered | 2024 |
| STARBOX 2094874 · TMA1174762 · design | Ming Shin Tools Co. Ltd. | 8 Hand | Registered | 2023 |
| SteraBox 2092223 · TMA1185021 | TOMI Environmental Solutions, Inc. | 5 Pharmaceuticals7 Machines11 Lighting+1 | Registered | 2023 |
| SteraBot 2041119 · TMA1187066 | TOMI Environmental Solutions, Inc. | 5 Pharmaceuticals7 Machines11 Lighting+1 | Registered | 2023 |
| STROBE 1986247 · TMA1249337 | WATKINS MANUFACTURING CORPORATION | 11 Lighting | Registered | 2024 |
| STROBE 1807647 · TMA1006758 | Curoplant Company Ltd. | 31 Fresh | Registered | 2018 |
| STRÖBER 1708533 · TMA987069 · design | ALEX STRÖBER GMBH | 10 Medical25 Clothing | Registered | 2017 |
| STARFLO 1507696 · TMA813994 · design | Industrial Filter Manufacturing Limited | 11 Lighting | Registered | 2011 |
| STARBOR 1342597 · TMA713131 | HIGH STRENGTH PLATES & PROFILES INC. | 6 Metal | Registered | 2008 |
| STORABOX 1335827 · TMA714358 | NATIONAL STORAGE & WAREHOUSING INC. | 6 Metal35 Advertising39 Transport | Registered | 2008 |
| STYROVOID 1307902 · TMA688464 | AMC Foam Technologies Inc. | 17 Rubber | Registered | 2007 |
| STROBE 1046312 · TMA561372 | ESTEE LAUDER COSMETICS LTD. | 3 Cosmetics | Registered | 2002 |
| STERIFLO 0843296 · TMA492400 | an individual | 10 Medical11 Lighting | Registered | 1998 |