[vtk-developers] vtkPowerCrustSurfaceReconstruction

Bill Lorensen wlorens1 at nycap.rr.com
Thu Jul 11 16:10:32 EDT 2002


I'll be buying in Dec 2004... Where's the party?

At 01:11 PM 7/11/02 -0400, Ken Martin wrote:
>Actually we are both wrong.  I added incorrectly. It expires December
>2004 not 2003. The 20 year rule is for patents filed after 1995.  I
>included a brief desc below.
>
>Ken
>
>> I think the MC patent does not expire until June 2005. The
>> current laws says 20 years from filing.
>> Adnittedly, I am not a patent lawyer,
>>
>> Bill
>
>How long do patents last?
>
>Utility and plant patents issued since June 8, 1995 expire 20 years
>from the date of application with the payment of maintenance fees.
>
>
>Utility and plant patents issued prior to June 8, 1995 expire 17 years
>from the date of issue with the payment of maintenance fees.
>
>
>Design patent expire 14 years from the date of issue.
>
>
>Patents are not renewable. Under special circumstances, a patent term
>may be extended.
>
>MC Issued - December 1, 1987
>
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