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| USA | Canada | UK | |
|---|---|---|---|
| Percentage that faced patent litigation | 73% | 63% | 30% |
| Percentage that took pre-litigation settlement | 17% | 6% | 0% |
| Percentage launched with no litigation or settlement | 0% | 13% | 37% |
| Percentage not launched for commercial or regulatory reasons (non-patent related) | 10% | 17% | 33% |
