| Patent Number | Title | Applicant | Opposition Date |
|---|---|---|---|
| EP3995135 | Prolonged Release Dosage Form Of Tapentadol L-(+)- Tartaric Acid Salt | GRÜNENTHAL GMBH | Jul 13, 2022 |
| EP3656765 | Salts Or Co-Crystals Of 3-(3-Dimethylamino-1-Ethyl-2-Methyl-Propyl)-Phenol | GRÜNENTHAL GMBH | Jan 13, 2022 |
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