I don't know about pitfalls in using it but why not use the
http://pair.uspto.gov/ <http://pair.uspto.gov/> PAIR database ? The
blue "View. Maint statement" tab provides the same information and is
presumably more up to date.
Steve van Dulken
British Library
www.bl.uk/patents <http://www.bl.uk/patents>
-----Original Message-----
From: Mary Ellen Mogee [mailto:Mogee@mogee.com]
Sent: 15 May 2002 13:58
To: piug-l@derwent.co.uk
Subject: CASSIS BIB data on expiration of U.S. patents due to nonpayment
of maintenance fee
Hi folks,
I would like to find out what members of this group think about using
the PTO's CASSIS-BIB CD to obtain data on whether U.S. patents have
expired due to nonpayment of maintenance fee? The database includes a
notation of E1, E2, or E3 for a patent if it has expired due to
nonpayment of the first, second, or third maintenance fee, respectively.
Conversations with people at the PTO indicate that if a patent expires
for nonpayment and then is reinstated, the E code is removed in the
database.
Does anybody know of any pitfalls of using this database?
Sincerely,
Mary Ellen
Mary Ellen Mogee, Ph.D., President
Mogee Research & Analysis, LLC
11701 Bowman Green Drive
Reston, VA 20190 USA
(t) +1 (703) 478-2827
(f) +1 (703) 478-3253
(e) mogee@mogee.com
(w) www.mogee.com
------------------------------------------------------------------------
----------------------------------------------
The information contained in this email is confidential and intended
only for the use of the individual or entity named above. If the reader
of this message is not the intended recipient, you are hereby notified
that any dissemination, distribution, or copying of this communication
is strictly prohibited. Derwent Information Limited will accept no
responsibility
or liability in respect to this email other than to the addressee. If
you
have received this communication in error, please notify us
immediately via email: postmaster@derwent.co.uk
------------------------------------------------------------------------
----------------------------------------------
*********************************************************************
Coming soon to The British Library Galleries :
Trading Places : the East India Company and Asia (from 24th May)
Magic Pencil : Children's Book Illustration Today (from 1st November)
*********************************************************************
The information contained in this e-mail is confidential and may be
legally privileged. It is intended for the addressee(s) only. If you
are not the intended recipient, please delete this e-mail and notify
the postmaster@bl.uk : The contents of this e-mail must not be
disclosed or copied without the sender's consent.
The statements and opinions expressed in this message are those of
the author and do not necessarily reflect those of the British
Library. The British Library does not take any responsibility for
the views of the author.
*********************************************************************
This archive was generated by hypermail 2b30 : Fri Feb 14 2003 - 11:56:51 GMT