Stephanus:
>your first comment reminds me of that famous quote from the head of the US Patent office in the 1870s - something along the lines of "We might as well shut up shop - everything that can be invented has been!" <
Sorry, but this "famous" quote is wrong.
Please take a look to the book "The End of Science" written by John Horgan.
On page 20, Horgan calls this story "an apocryphal legend". The commissioner of patents, Henry Ellsworth, remarked in 1843 at a US-congressional- testimony as follows:
"The advancement of the arts, from year to year, taxes our credulity and seems to presage the arrival of that period when human improvement must end".
Unfortunately, Ellsworth made himself untrustworthy. He asked for extra funds to cope with the flood of inventions he expected in agriculture, transportation and communication; and 2 years later he expressed pride at having expanded the patent office…
Actually, Ellsworth was a visionary. He anticipated the argument, that GUNTHER STENT made more than a century later:
The faster the science moves, the faster it will reach it's ultimate INEVITABLE LIMITS.
Today, we see the fulfilling of this prophecy in the breakdown of the system for protection of intellectual property, and in the crash of the New Economy. The recent troubles are only the begin.
More about the background of recent patent troubles on http://www.patentology.com/
(currently under construction)