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Lossy Compression (JPEG et al) patents
Commemorate Banana Union Day

When creating, using or JPEG graphic files, you may be infringing on patents. Some extensions to JPEG are patented. Basic principles of coding used by JPEG are patented in the US and in Europe, and recently a new patent owner has started to aggressively assert his monopoly rights. The JPEG Consortium reacted quickly by delaring that JPEG is no longer a standard.
US 4698672
EP 0266049
JP 63148789

Compression LABS hold about 20 EP patents but refrained from enforcing this one against the JPEG format. Now a new proprietor has changed this policy and apparently already squeezed 15 mn USD out of Sony.

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english version 2004/08/16 by Hartmut PILCH