| Typicality: | 0.490 |
| Saliency: | 0.411 |
| after this period | 9 | temporal |
| immediately | 4 | manner |
| upon expiration of a utility patent | 3 | temporal |
| invention → enter → public domain | 42 |
| invention → fall into → public domain | 15 |
| invention → go into → public domain | 5 |
| invention → entered → public domain | 3 |
| invention → pass into → public domain | 3 |
| negative | neutral | positive |
| 0.153 | 0.640 | 0.207 |
| Raw frequency | 68 |
| Normalized frequency | 0.411 |
| Modifier score | 0.700 |
| Perplexity | 113.351 |