My understanding is that if you can demonstrate knowledge and use of a
subsequent patent, where your knowledge and use predates the filing date you
may be able to be held harmless in the use of the claims in the patent.
However, this will not invalidate the patent unless the knowledge and use
was documented in the public domain prior to the filing date.  So, the
patent may be held in force against other violators who cannot demonstrate
knowledge and use prior to the filing date.


Best regards,
Leo

Director of Applications Engineering
ASAT, Inc.
3755 Capital of Texas Highway, Suite 100
Austin, Texas     78704

ph     512-383-4593
fx      512-383-1590
[log in to unmask]
www.asat.com


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-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Saturday, January 08, 2005 12:15 PM
To: [log in to unmask]
Subject: Re: [TN] Patent No.: US6,617,529 B2


Scott,

If I understand the patent process correct (I worked at a place where a lot
of patents were filed and have a few in my name)....

to invalidate a patent.....you have to show well documented proof that the
invention was practiced by you before they filed.

You won't be awarded the patent (because U didn't file it)...but their's is
invalidated.

Rashesh

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