>>Interesting links. I read that some time ago that patents presented a problem because in some cases they were given for things that did'nt really deserved to be patented because of the simplicity of the software invention.
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>Some of the things over which previous patents were "discovered" long after they became quite popular, IIRC, are hyperlinks, and frames. Another doubtful patent was over the process of buying stuff with just a few clicks, used by Amazon.

And what about patents on DNA sequences? I understand that some exist!