- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/421 - 1,3-Oxazoles, e.g. pemoline, trimethadione
Patent holdings for IPC class A61K 31/421
Total number of patents in this class: 1076
10-year publication summary
|
77
|
79
|
87
|
77
|
62
|
70
|
54
|
48
|
55
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Theravance Biopharma R&D IP, LLC | 462 |
25 |
| Allergan, Inc. | 2362 |
23 |
| Merck Sharp & Dohme LLC | 3738 |
17 |
| Takeda Pharmaceutical Company Limited | 2703 |
16 |
| Bristol-myers Squibb Company | 4896 |
12 |
| F. Hoffmann-La Roche AG | 7912 |
12 |
| AstraZeneca AB | 2928 |
12 |
| Toray Industries, Inc. | 6867 |
12 |
| Otsuka Pharmaceutical Co., Ltd. | 1496 |
12 |
| The Regents of the University of California | 19784 |
11 |
| Shionogi & Co., Ltd. | 869 |
11 |
| Enanta Pharmaceuticals, Inc. | 428 |
10 |
| Merck & Co., Inc. | 374 |
9 |
| Merck Sharp & Dohme Corp. | 2201 |
9 |
| Argenta Discovery Ltd. | 48 |
9 |
| Novartis AG | 10963 |
8 |
| Boehringer Ingelheim International GmbH | 4702 |
8 |
| Astellas Pharma Inc. | 1083 |
8 |
| CalciMedica, Inc. | 81 |
8 |
| iCeutica Pty Ltd | 38 |
8 |
| Other owners | 836 |