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| 98877293 | SIGMA | Princess Yachts Limited | 8000282 |
| 87121566 | SIGMA | TEXCEL, LLC | 5718723 |
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| 78350195 | SIGMA | VIRCO MFG. CORPORATION | 2961510 |
| 97918591 | SIGMA | Sigma Instruments Holdings, LLC | 7562198 |
| 86245463 | SIGMA | SIGMA CORPORATION (INDIA) LIMITED | 4839279 |
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| 79008233 | SIGMA | SIGMA-Elektro GmbH | 3385625 |
| 76033847 | SIGMA | RICARDO BEVERLY HILLS, INC. | 2615817 |
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| 87575351 | SIGMA | Karsten Manufacturing Corporation | 5567027 |
| 87533697 | SIGMA | BUNZL IP HOLDINGS, LLC | 5571743 |
| 73494167 | SIGMA | G.A. BRAUN, INCORPORATED | 1345633 |
| 76186728 | SIGMA | OTIS ELEVATOR COMPANY | 2821989 |
| 79219542 | SIGMA | Sigma Laborzentrifugen GmbH | 5466771 |
| 76173925 | SIGMA | Halliburton Energy Services, Inc. | 2806950 |
| 76518253 | SIGMA | SIGMA DI AMBROGIANI SERGIO & C. S.A.S. | 2909679 |
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| 87248267 | SIGMA | Carl Zeiss Microscopy GmbH | 5500338 |
| 74187798 | SIGMA | Society of Independent Gasoline Marketers of America | 1798294 |
| 97135193 | SIGMA | MPS North America | — |
| 97326008 | SIGMA | Orbital Sidekick, Inc. | 7072315 |
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| 85206502 | SIGMA | U.S. Band & Orchestra Supplies, Inc. | 4403696 |
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| 77745726 | SIGMA | Society of Independent Gasoline Marketers of America | 3812937 |
| 79101820 | SIGMA | Swiss Reinsurance Company Ltd. | 4144834 |
| 79120334 | SIGMA | signotec GmbH | 4362910 |
| 76049889 | SIGMA | KNORR-BREMSE AG | 2685214 |
| 97060315 | SIGMA | Sigma Corporation (India) Limited | 6893264 |
| 79247470 | SIGMA | ZHENG XI | — |
| 73229739 | SIGMA | ARRAY HOLDINGS, INC. | 1185522 |
| 79074545 | SIGMA | KAESER KOMPRESSOREN SE | 4065179 |
| 85099079 | SIGMA | Sigma Laborzentrifugen GmbH | 4011310 |
| 90588220 | SIGMA | Sigma Corporation (India) Limited | 6644353 |
| 72100307 | SIGMA | MERCK KGAA | 0724522 |
| 75485561 | SIGMA | TBC TRADEMARKS, LLC | 2262889 |
| 74012323 | SIGMA | SIGMA PERFORMANCE SOLUTIONS, INC. | 1619012 |
| 87900519 | SIGMA | SIGMA FINANCIAL CORPORATION | — |
| 90561636 | SIGMA | Travis James Ferry | — |
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| 72027240 | SIGMA | MERCK KGAA | 0658188 |
| 76038786 | SIGMA | Portec, Inc. | 2446483 |
| 79095099 | SIGMA | Mounting Systems GmbH | 4081900 |
