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Bruno, long time ago

Sat, 21 Jun 2003 LZW/GIF patent expired today in USA

Unisys's US patent 4,558,302 expired today. This was the LZW compression algorithm, which is used (among others) by the GIF format, created by Compuserve in 1987.

For some others countries, the LZW patent will expire later:

Europe: June 18th, 2004
Canada: June 6th, 2004
Japan: June 20th, 2004

More information about this subject on kuro5hin.

The question is: What will happen to the PNG format now?

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