>What is that difference? It's not like you can proove that anything is not covered by any patent
When you have a codec that have all patent expired after 20 years. That is guaranteed patent free, because you can no longer extract patent from it. Claiming you dont have any patent just means you think it is not covered by any patents until proven.
When you have a codec that have all patent expired after 20 years. That is guaranteed patent free, because you can no longer extract patent from it. Claiming you dont have any patent just means you think it is not covered by any patents until proven.