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                                                              FILED
                                                          JAN 26 1998
                                                        RICHARD W. WIERING
                                                    CLERK, U.S. DISTRICT COURT
                                                 NORTHERN DISTRICT OF CALIFORNIA
                                                             SAN JOSE

                 IN THE UNITED STATES DISTRICT COURT

                FOR THE NORTHERN DISTRICT OF CALIFORNIA

CADENCE DESIGN SYSTEMS, INC.,                      NO. C 95-20828 RMW(PVT)

       Plaintiff,                                  MODIFICATION OF PRELIMINARY
                                                   INJUNCTION

  v.

AVANT!, INC., et al.,

      Defendants.


     Plaintiff moves for modification of the preliminary injunction issued on
December 19, 1997. The court has read the papers submitted. The court grants
Cadence's request for reconsideration and modifies the preliminary injunction
to remove any implication that Avant!'s licensees are authorized by the
preliminary injunction to continue to use the enjoined products without
exposure to claims of copyright violation. The court incorporates its
findings and conclusions as set forth in the December 19, 1997 order and
hereby issues its Modified Order.

     IT IS HEREBY ORDERED THAT defendant Avant!, its officers, agents,
servants, employees and attorneys and any and all persons in active concert
with them who receive actual notice of this Modified Order, by personal
service or otherwise (collectively, "Avant!"), are hereby restrained and
enjoined, pending trial, from:

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     1.  Infringing Cadence's copyrights in Cadence's Design Framework II
software product or directly or indirectly marketing, selling, leasing,
licensing, copying or transferring any product or work copied or derived from
Cadence's Design Framework II, specifically including, but not limited to,
Avant!'s ArcCell, ArcCellBV, and ArcCellXO products (collectively,
"ArcCell"); and

     2.  Possessing or using any copies, in any medium including printed
matter and electronic media, of any portion of the source code or object code
for ArcCell or any other product, to the extent that that portion is copied
or derived from Cadence's Design Framework II, and Avant! is further ordered
to return to Cadence any such copies under its possession or control by
January 30, 1998 provided, however, that Avant!'s counsel, and independent
experts working with them, may retain copies of said code solely for purposes
of this litigation.

     IT IS HEREBY FURTHER ORDERED THAT defendant Avant! is to forthwith
deliver by mail or otherwise a copy this Modified Order to all current or
former purchasers, licensees, users or recipients of ArcCell or any product
copied or derived from Cadence's Design Framework II and obtain confirmation
from them as to whether they have a functioning copy of ArcCell or such
product. Avant! is to file under seal with the court by January 30, 1998 a
list: (1) identifying each such purchaser, licensee, user, or recipient; (2)
whether each has a functioning copy; and, if not, (3) when and how it became
non-functioning. Avant! is to require, to the extent it has a legal right to
do so, any such purchaser, licensee, user or recipient to return the ArcCell
or such other product to Avant! or destroy it. Avant! is to provide Cadence
by January 30, 1998 with a list of the names and addresses of any such
purchaser, licensee, user or recipient who still maintains a functional copy
of ArcCell or such other product and when it will become non-functional.
NOTHING IN THIS MODIFIED ORDER IS INTENDED TO AUTHORIZE ANYONE TO USE ANY
AVANT! PRODUCT SUBJECT TO THIS ORDER OR TO SUGGEST THEY COULD DO SO WITHOUT
EXPOSURE TO A CLAIM OF VIOLATION OF THE COPYRIGHT LAWS.

     This Modified Order does not affect or in any way release Avant! from
those activities that were enjoined by this court's order of March 18, 1997.
In the March 18, 1997 order the court ordered Cadence to post a bond of
$50,000 for the payment of such damages as may be incurred or suffered by
Avant! if it be found that Avant! has been wrongfully enjoined or restrained.
That bond

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shall remain in effect but must be modified to ensure coverage of this
current Modified Order.


DATED:   1/24/98
                                                /s/ Ronald M. Whyte
                                                -------------------------
                                                RONALD M. WHYTE
                                                United States District Judge



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