| Serial Number | 88792534 |
| Word Mark | DUOLINK |
| Filing Date | Tuesday, February 11, 2020 |
| Status | 700 - REGISTERED |
| Status Date | Tuesday, September 1, 2020 |
| Registration Number | 6140948 |
| Registration Date | Tuesday, September 1, 2020 |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, June 16, 2020 |
| Goods and Services | Chemical kit for analysis of protein interactions for laboratory research or industrial use |
| International Class | 001 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins; unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry. |
| US Class Codes | 001, 005, 006, 010, 026, 046 |
| Class Status Code | 6 - Active |
| Class Status Date | Saturday, February 15, 2020 |
| Primary Code | 001 |
| First Use Anywhere Date | Wednesday, July 18, 2007 |
| First Use In Commerce Date | Wednesday, July 18, 2007 |
| Party Name | MERCK KGAA |
| Party Type | 31 - New Owner After Registration |
| Legal Entity Type | 31 - NOT AVAILABLE |
| Address | DARMSTADT 64293 DE |
| Party Name | Sigma-Aldrich Co. LLC |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | St. Louis, MO 63103 |
| Party Name | Sigma-Aldrich Co. LLC |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | St. Louis, MO 63103 |
| Party Name | Sigma-Aldrich Co. LLC |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | St. Louis, MO 63103 |
| Event Date | Event Description |
| Saturday, February 15, 2020 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Wednesday, May 13, 2020 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, May 27, 2020 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Tuesday, June 16, 2020 | PUBLISHED FOR OPPOSITION |
| Tuesday, June 16, 2020 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, September 1, 2020 | REGISTERED-PRINCIPAL REGISTER |
| Wednesday, October 28, 2020 | AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP |
| Friday, February 14, 2020 | NEW APPLICATION ENTERED |
| Thursday, April 30, 2020 | ASSIGNED TO EXAMINER |
| Thursday, May 20, 2021 | TEAS CHANGE OF CORRESPONDENCE RECEIVED |
| Thursday, May 20, 2021 | APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED |
| Monday, September 1, 2025 | COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED |
| Thursday, May 20, 2021 | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED |
| Thursday, May 20, 2021 | TEAS CHANGE OF OWNER ADDRESS RECEIVED |
| Thursday, May 20, 2021 | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED |
| Thursday, May 20, 2021 | TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS |