- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/498 - Pyrazines or piperazines ortho- or peri-condensed with carbocyclic ring systems, e.g. quinoxaline, phenazine
Patent holdings for IPC class A61K 31/498
Total number of patents in this class: 2255
10-year publication summary
|
153
|
177
|
183
|
159
|
180
|
182
|
177
|
191
|
192
|
115
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Janssen Pharmaceutica N.V. | 3383 |
62 |
| Allergan, Inc. | 2346 |
46 |
| Eye Therapies LLC | 41 |
33 |
| Abbvie Inc. | 1801 |
31 |
| Bristol-myers Squibb Company | 4893 |
27 |
| Purdue Pharma L.P. | 500 |
27 |
| Astex Therapeutics Limited | 236 |
24 |
| Neupharma, Inc. | 72 |
22 |
| AstraZeneca AB | 2908 |
19 |
| Merck Patent GmbH | 5823 |
18 |
| Takeda Pharmaceutical Company Limited | 2709 |
17 |
| University of Pittsburgh - Of the Commonwealth System of Higher Education | 3156 |
16 |
| RedHill Biopharma Ltd. | 98 |
15 |
| Bow River LLC | 22 |
15 |
| Gilead Sciences, Inc. | 2037 |
14 |
| Santen Pharmaceutical Co., Ltd. | 596 |
14 |
| Shionogi & Co., Ltd. | 853 |
14 |
| Merck Sharp & Dohme LLC | 3741 |
14 |
| Novartis AG | 10850 |
13 |
| Exelixis, Inc. | 398 |
13 |
| Other owners | 1801 |