In reference to the patent: WO2000078123A1

I cant seem to find if this patent is still valid (or been renewed)... Can anyone point me in the direction of the answer? And the source of this information?



  • This is an application, not a patent. Patents can't be "renewed".
    – Eric S
    May 19, 2017 at 2:55
  • patents.stackexchange.com/q/17115/18033 scroll down to "pct"
    – user18033
    May 19, 2017 at 8:11
  • Please check out the useful links DonQuiKong provided and if you still have any specific questions, either edit this question or ask a new one.
    – Eric S
    May 19, 2017 at 14:32

1 Answer 1


This application seems to have been issued as a patent in the US as US6543460. Normally it would expire on June 24, 2019, but it is listed as lapsed so not enforceable. It may be possible to resurrect the patent. There is also an associated patent application EP1194032A1, which is listed as "withdrawn".

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