| with the ptab invalidation rate | 10 | other |
| virtually | 9 | degree |
| almost | 5 | degree |
| patent → be → worthless | 101 |
| patent → become → worthless | 7 |
| patent → turn out to be → worthless | 3 |
| negative | neutral | positive |
| 0.712 | 0.257 | 0.031 |
| Raw frequency | 111 |
| Normalized frequency | 0.522 |
| Modifier score | 0.857 |
| Perplexity | 52.963 |