- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 221/20 - Spiro-condensed ring systems
Patent holdings for IPC class C07D 221/20
Total number of patents in this class: 369
10-year publication summary
|
23
|
25
|
36
|
28
|
38
|
45
|
23
|
18
|
31
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Syngenta Crop Protection AG | 6488 |
19 |
| VALO Health, Inc. | 186 |
15 |
| Amgen Inc. | 4353 |
11 |
| Pfizer Inc. | 3371 |
10 |
| Merck Sharp & Dohme LLC | 3723 |
10 |
| Merck Patent GmbH | 5663 |
8 |
| Bristol-myers Squibb Company | 4812 |
7 |
| Rottapharm Biotech S.r.l. | 42 |
7 |
| Arvinas Operations, Inc. | 256 |
7 |
| Astellas Pharma Inc. | 1030 |
6 |
| Syngenta Participations AG | 1587 |
5 |
| Constellation Pharmaceuticals, Inc. | 213 |
5 |
| Oryzon Genomics S.A. | 102 |
5 |
| Relay Therapeutics, Inc. | 81 |
5 |
| LG Chem, Ltd. | 17840 |
4 |
| Takeda Pharmaceutical Company Limited | 2721 |
4 |
| Forma Therapeutics, Inc. | 155 |
4 |
| Proyecto de Biomedicina Cima, S.L. | 50 |
4 |
| H. Lundbeck A/S | 1238 |
4 |
| Wuhan Createrna Science and Technology Co.,Ltd. | 27 |
4 |
| Other owners | 225 |