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using sed command to replace multiple lines

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# 1  
Old 07-10-2007
using sed command to replace multiple lines
the file contains the follwoing lines

/*
* Copyright (C) 1995-1996 by XXX Corporation. This program
* contains proprietary and confidential information. All rights reserved
* except as may be permitted by prior written consent.
*
* $Id: xxx_err.h,v 1.10 2001/07/26 18:48:34 zzzz $
*/

in this \n can be any where inside copy right stmt.
This should be replace with the following lines
/*
* Copyright (C) 1995-2004 by YYY. All rights reserved.
* This program contains proprietary and confidential information.
*/

I tried using the following commands

past="Copyright\s.*XXX Corporation\.[:word]*consent.[\s]"


pres='* Copyright (c) 2004 by YYY. All rights reserved.\
* This program contains proprietary and confidential information.'

sed "s/$past/$pres/" $fileName > fileMod

but it is not matching with copyright stmt in the file. can somebody correct this
# 2  
Old 07-10-2007
sed "s/$past/$pres/" $fileName > fileMod

use single code '

Code:
sed "s/'$past'/'$pres'/" $fileName > fileMod

try this ...
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