| Typicality: | 0.418 |
| Saliency: | 0.242 |
| patent → be challenged at → ptab | 8 |
| patent → be challenged at → the ptab | 5 |
| patent → be challenged before → the ptab | 3 |
| negative | neutral | positive |
| 0.405 | 0.550 | 0.045 |
| Raw frequency | 16 |
| Normalized frequency | 0.242 |
| Modifier score | 0.700 |
| Perplexity | 212.235 |