diff --git a/icu4c/source/common/utrace.c b/icu4c/source/common/utrace.c
index fc409525302..eca15036c5a 100644
--- a/icu4c/source/common/utrace.c
+++ b/icu4c/source/common/utrace.c
@@ -1,6 +1,6 @@
 /*
 *******************************************************************************
-*   Copyright (C) 2003, International Business Machines
+*   Copyright (C) 2003-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *******************************************************************************
 *   file name:  utrace.c
diff --git a/icu4c/source/test/perf/ustrperf/StringPerf.pl b/icu4c/source/test/perf/ustrperf/StringPerf.pl
index b337738ba1e..02cde457e0f 100755
--- a/icu4c/source/test/perf/ustrperf/StringPerf.pl
+++ b/icu4c/source/test/perf/ustrperf/StringPerf.pl
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 #  ********************************************************************
 #  * COPYRIGHT:
-#  * Copyright (c) 2003, International Business Machines Corporation and
+#  * Copyright (c) 2003-2004, International Business Machines Corporation and
 #  * others. All Rights Reserved.
 #  ********************************************************************
 
diff --git a/icu4c/source/test/perf/ustrperf/stringperf.cpp b/icu4c/source/test/perf/ustrperf/stringperf.cpp
index ba51cfa865e..a037d620140 100644
--- a/icu4c/source/test/perf/ustrperf/stringperf.cpp
+++ b/icu4c/source/test/perf/ustrperf/stringperf.cpp
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT:
- * Copyright (C) 2002 IBM, Inc.   All Rights Reserved.
+ * Copyright (C) 2002-2004 IBM, Inc.   All Rights Reserved.
  *
  ********************************************************************/
 /*****************************************************************************
diff --git a/icu4c/source/test/perf/ustrperf/stringperf.h b/icu4c/source/test/perf/ustrperf/stringperf.h
index 9e94f5febee..381fa961f12 100644
--- a/icu4c/source/test/perf/ustrperf/stringperf.h
+++ b/icu4c/source/test/perf/ustrperf/stringperf.h
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2002, International Business Machines
+* Copyright (c) 2002-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 **********************************************************************
diff --git a/icu4c/source/test/testdata/rbbitst.txt b/icu4c/source/test/testdata/rbbitst.txt
index 148bb0f6e80..bdb45db0c74 100644
--- a/icu4c/source/test/testdata/rbbitst.txt
+++ b/icu4c/source/test/testdata/rbbitst.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2001-2003 International Business Machines
+# Copyright (c) 2001-2004 International Business Machines
 # Corporation and others. All Rights Reserved.
 #
 # RBBI Test Data
diff --git a/icu4c/source/test/testdata/testaliases.txt b/icu4c/source/test/testdata/testaliases.txt
index c91570000cb..ab4fc82e4d4 100644
--- a/icu4c/source/test/testdata/testaliases.txt
+++ b/icu4c/source/test/testdata/testaliases.txt
@@ -1,6 +1,6 @@
 //*******************************************************************************
 //*
-//*   Copyright (C) 2002-2003, International Business Machines
+//*   Copyright (C) 2002-2004, International Business Machines
 //*   Corporation and others.  All Rights Reserved.
 //*
 //*******************************************************************************
diff --git a/icu4c/source/test/testdata/translit_rules.txt b/icu4c/source/test/testdata/translit_rules.txt
index c02763b0f4c..b45837d691f 100644
--- a/icu4c/source/test/testdata/translit_rules.txt
+++ b/icu4c/source/test/testdata/translit_rules.txt
@@ -1,5 +1,5 @@
 #--------------------------------------------------------------------
-# Copyright (c) 1999-2003, International Business Machines
+# Copyright (c) 1999-2004, International Business Machines
 # Corporation and others. All Rights Reserved.
 #--------------------------------------------------------------------
 
diff --git a/icu4c/source/test/usetperf/bitset.cpp b/icu4c/source/test/usetperf/bitset.cpp
index aeb23023945..d1356c0edba 100644
--- a/icu4c/source/test/usetperf/bitset.cpp
+++ b/icu4c/source/test/usetperf/bitset.cpp
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2002, International Business Machines
+* Copyright (c) 2002-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * 2002-09-20 aliu Created.
diff --git a/icu4c/source/test/usetperf/bitset.h b/icu4c/source/test/usetperf/bitset.h
index 4ed935a08c9..8b7122dfdec 100644
--- a/icu4c/source/test/usetperf/bitset.h
+++ b/icu4c/source/test/usetperf/bitset.h
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2002, International Business Machines
+* Copyright (c) 2002-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * 2002-09-20 aliu Created.
diff --git a/icu4c/source/test/usetperf/timer.h b/icu4c/source/test/usetperf/timer.h
index 92792b96cdc..4aa5824f376 100644
--- a/icu4c/source/test/usetperf/timer.h
+++ b/icu4c/source/test/usetperf/timer.h
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2002, International Business Machines
+* Copyright (c) 2002-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * 2002-09-20 aliu Created.
diff --git a/icu4c/source/tools/ctestfw/datamap.cpp b/icu4c/source/tools/ctestfw/datamap.cpp
index 46efe8d151c..30da4500df8 100644
--- a/icu4c/source/tools/ctestfw/datamap.cpp
+++ b/icu4c/source/tools/ctestfw/datamap.cpp
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 2002-2003, International Business Machines Corporation and
+ * Copyright (c) 2002-2004, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 
diff --git a/icu4c/source/tools/ctestfw/testdata.cpp b/icu4c/source/tools/ctestfw/testdata.cpp
index c0638f041b2..68a5b5357ea 100644
--- a/icu4c/source/tools/ctestfw/testdata.cpp
+++ b/icu4c/source/tools/ctestfw/testdata.cpp
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 2002-2003, International Business Machines Corporation and
+ * Copyright (c) 2002-2004, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 
diff --git a/icu4c/source/tools/ctestfw/tstdtmod.cpp b/icu4c/source/tools/ctestfw/tstdtmod.cpp
index 4b08148d616..6846680a769 100644
--- a/icu4c/source/tools/ctestfw/tstdtmod.cpp
+++ b/icu4c/source/tools/ctestfw/tstdtmod.cpp
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 2002, International Business Machines Corporation and
+ * Copyright (c) 2002-2004, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 
diff --git a/icu4c/source/tools/genccode/genccode.8.in b/icu4c/source/tools/genccode/genccode.8.in
index 547dd25b7b2..add079edfb0 100644
--- a/icu4c/source/tools/genccode/genccode.8.in
+++ b/icu4c/source/tools/genccode/genccode.8.in
@@ -2,7 +2,7 @@
 .\"
 .\" genccode.8: manual page for the gennames utility
 .\"
-.\" Copyright (C) 2003 IBM, Inc. and others.
+.\" Copyright (C) 2003-2004 IBM, Inc. and others.
 .\"
 .TH GENCCODE 8 "11 March 2004" "ICU MANPAGE" "ICU @VERSION@ Manual"
 .SH NAME
diff --git a/icu4c/source/tools/genccode/genccode.c b/icu4c/source/tools/genccode/genccode.c
index 234a978e8cf..bafe7bfb6f7 100644
--- a/icu4c/source/tools/genccode/genccode.c
+++ b/icu4c/source/tools/genccode/genccode.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/gennorm/store.c b/icu4c/source/tools/gennorm/store.c
index aec992b7337..0cfee3d13c3 100644
--- a/icu4c/source/tools/gennorm/store.c
+++ b/icu4c/source/tools/gennorm/store.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/genprops/genprops.h b/icu4c/source/tools/genprops/genprops.h
index 996509cd38b..0afaa7f9acb 100644
--- a/icu4c/source/tools/genprops/genprops.h
+++ b/icu4c/source/tools/genprops/genprops.h
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/genprops/store.c b/icu4c/source/tools/genprops/store.c
index 2d246b1007f..44163ad262c 100644
--- a/icu4c/source/tools/genprops/store.c
+++ b/icu4c/source/tools/genprops/store.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/genrb/gendtjar.pl b/icu4c/source/tools/genrb/gendtjar.pl
index d9aab86bbcc..d6794b0922d 100755
--- a/icu4c/source/tools/genrb/gendtjar.pl
+++ b/icu4c/source/tools/genrb/gendtjar.pl
@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 #  ********************************************************************
 #  * COPYRIGHT:
-#  * Copyright (c) 2002-2003, International Business Machines Corporation and
+#  * Copyright (c) 2002-2004, International Business Machines Corporation and
 #  * others. All Rights Reserved.
 #  ********************************************************************
 
diff --git a/icu4c/source/tools/genrb/genrbjar.pl b/icu4c/source/tools/genrb/genrbjar.pl
index 5f1e6caa963..12be04dea97 100755
--- a/icu4c/source/tools/genrb/genrbjar.pl
+++ b/icu4c/source/tools/genrb/genrbjar.pl
@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 #  ********************************************************************
 #  * COPYRIGHT:
-#  * Copyright (c) 2002-2003, International Business Machines Corporation and
+#  * Copyright (c) 2002-2004, International Business Machines Corporation and
 #  * others. All Rights Reserved.
 #  ********************************************************************
 
diff --git a/icu4c/source/tools/genrb/parse.c b/icu4c/source/tools/genrb/parse.c
index 6d68e13cb24..12f4fb4a4e6 100644
--- a/icu4c/source/tools/genrb/parse.c
+++ b/icu4c/source/tools/genrb/parse.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1998-2003, International Business Machines
+*   Copyright (C) 1998-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/gensprep/gensprep.c b/icu4c/source/tools/gensprep/gensprep.c
index 7146e15c322..4b9c0ead2d9 100644
--- a/icu4c/source/tools/gensprep/gensprep.c
+++ b/icu4c/source/tools/gensprep/gensprep.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2003, International Business Machines
+*   Copyright (C) 2003-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/gensprep/store.c b/icu4c/source/tools/gensprep/store.c
index 5a5f8b71c1f..6172ccdbcef 100644
--- a/icu4c/source/tools/gensprep/store.c
+++ b/icu4c/source/tools/gensprep/store.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/gentest/Makefile.in b/icu4c/source/tools/gentest/Makefile.in
index e2d16433b3d..422a53f1c72 100644
--- a/icu4c/source/tools/gentest/Makefile.in
+++ b/icu4c/source/tools/gentest/Makefile.in
@@ -1,6 +1,6 @@
 ## Makefile.in for ICU - tools/gentest
 
-## Copyright (c) 1999-2003, International Business Machines Corporation and
+## Copyright (c) 1999-2004, International Business Machines Corporation and
 ## others. All Rights Reserved.
 ## Madhu Katragadda
 
diff --git a/icu4c/source/tools/gentest/genres32.c b/icu4c/source/tools/gentest/genres32.c
index 6106a1b33ae..4925d876291 100644
--- a/icu4c/source/tools/gentest/genres32.c
+++ b/icu4c/source/tools/gentest/genres32.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2003-2003, International Business Machines
+*   Copyright (C) 2003-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/gentest/gentest.c b/icu4c/source/tools/gentest/gentest.c
index 3cfaede156e..57869c1048a 100644
--- a/icu4c/source/tools/gentest/gentest.c
+++ b/icu4c/source/tools/gentest/gentest.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1999-2003, International Business Machines
+*   Copyright (C) 1999-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/pkgdata/cmnmode.c b/icu4c/source/tools/pkgdata/cmnmode.c
index dea6b8969cb..2f380d22c1a 100644
--- a/icu4c/source/tools/pkgdata/cmnmode.c
+++ b/icu4c/source/tools/pkgdata/cmnmode.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 *
-*   Copyright (C) 2000, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/pkgdata/dllmode.c b/icu4c/source/tools/pkgdata/dllmode.c
index 70c1ccb6c76..b12d07370f0 100644
--- a/icu4c/source/tools/pkgdata/dllmode.c
+++ b/icu4c/source/tools/pkgdata/dllmode.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 *
-*   Copyright (C) 2000-2003, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/pkgdata/makefile.h b/icu4c/source/tools/pkgdata/makefile.h
index 375f65ef4f0..599ec94725b 100644
--- a/icu4c/source/tools/pkgdata/makefile.h
+++ b/icu4c/source/tools/pkgdata/makefile.h
@@ -1,6 +1,6 @@
 /**************************************************************************
 *
-*   Copyright (C) 2000, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ***************************************************************************
diff --git a/icu4c/source/tools/pkgdata/pkgdata.c b/icu4c/source/tools/pkgdata/pkgdata.c
index df51698c56b..9ecd2df6a29 100644
--- a/icu4c/source/tools/pkgdata/pkgdata.c
+++ b/icu4c/source/tools/pkgdata/pkgdata.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 *
-*   Copyright (C) 2000-2003, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/pkgdata/pkgtypes.c b/icu4c/source/tools/pkgdata/pkgtypes.c
index 41dee0e7540..a32f5545fba 100644
--- a/icu4c/source/tools/pkgdata/pkgtypes.c
+++ b/icu4c/source/tools/pkgdata/pkgtypes.c
@@ -1,6 +1,6 @@
 /**************************************************************************
 *
-*   Copyright (C) 2000-2003, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ***************************************************************************
diff --git a/icu4c/source/tools/pkgdata/pkgtypes.h b/icu4c/source/tools/pkgdata/pkgtypes.h
index 1899cc67282..f349e047a7e 100644
--- a/icu4c/source/tools/pkgdata/pkgtypes.h
+++ b/icu4c/source/tools/pkgdata/pkgtypes.h
@@ -1,6 +1,6 @@
 /**************************************************************************
 *
-*   Copyright (C) 2000-2003, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ***************************************************************************
diff --git a/icu4c/source/tools/pkgdata/sttcmode.c b/icu4c/source/tools/pkgdata/sttcmode.c
index 89ac092243a..78a408072be 100644
--- a/icu4c/source/tools/pkgdata/sttcmode.c
+++ b/icu4c/source/tools/pkgdata/sttcmode.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 *
-*   Copyright (C) 2002, International Business Machines
+*   Copyright (C) 2002-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/pkgdata/winmode.c b/icu4c/source/tools/pkgdata/winmode.c
index 925f49f1e3c..fa650cedd33 100644
--- a/icu4c/source/tools/pkgdata/winmode.c
+++ b/icu4c/source/tools/pkgdata/winmode.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 *
-*   Copyright (C) 2000-2003, International Business Machines
+*   Copyright (C) 2000-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/toolutil/ucbuf.c b/icu4c/source/tools/toolutil/ucbuf.c
index 9d6e4415079..2c1f1e556fc 100644
--- a/icu4c/source/tools/toolutil/ucbuf.c
+++ b/icu4c/source/tools/toolutil/ucbuf.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 1998-2003, International Business Machines
+*   Copyright (C) 1998-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/toolutil/ucm.c b/icu4c/source/tools/toolutil/ucm.c
index 3ccedbb5bcc..108e4325b4e 100644
--- a/icu4c/source/tools/toolutil/ucm.c
+++ b/icu4c/source/tools/toolutil/ucm.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2003, International Business Machines
+*   Copyright (C) 2003-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/toolutil/ucmstate.c b/icu4c/source/tools/toolutil/ucmstate.c
index 5b90297b38e..81e3b3a36eb 100644
--- a/icu4c/source/tools/toolutil/ucmstate.c
+++ b/icu4c/source/tools/toolutil/ucmstate.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2003, International Business Machines
+*   Copyright (C) 2003-2004, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/tools/tzcode/readme.txt b/icu4c/source/tools/tzcode/readme.txt
index 27952b3df84..0a378ee8fd8 100644
--- a/icu4c/source/tools/tzcode/readme.txt
+++ b/icu4c/source/tools/tzcode/readme.txt
@@ -1,5 +1,5 @@
 **********************************************************************
-* Copyright (c) 2003, International Business Machines
+* Copyright (c) 2003-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: Alan Liu
diff --git a/icu4c/source/tools/tzcode/tz.alias b/icu4c/source/tools/tzcode/tz.alias
index 6b0c03c0023..ed5199eb305 100644
--- a/icu4c/source/tools/tzcode/tz.alias
+++ b/icu4c/source/tools/tzcode/tz.alias
@@ -1,5 +1,5 @@
 ######################################################################
-# Copyright (C) 1999-2003, International Business Machines
+# Copyright (C) 1999-2004, International Business Machines
 # Corporation and others.  All Rights Reserved.
 ######################################################################
 # A simple alias list. We use this to retain backward compatibility.
diff --git a/icu4c/source/tools/tzcode/tz2icu.cpp b/icu4c/source/tools/tzcode/tz2icu.cpp
index 69460b932f6..a55ff3737ec 100644
--- a/icu4c/source/tools/tzcode/tz2icu.cpp
+++ b/icu4c/source/tools/tzcode/tz2icu.cpp
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2003, International Business Machines
+* Copyright (c) 2003-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: Alan Liu
diff --git a/icu4c/source/tools/tzcode/tz2icu.h b/icu4c/source/tools/tzcode/tz2icu.h
index 7cbe4ebb5fc..d3cfa641876 100644
--- a/icu4c/source/tools/tzcode/tz2icu.h
+++ b/icu4c/source/tools/tzcode/tz2icu.h
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-* Copyright (c) 2003, International Business Machines
+* Copyright (c) 2003-2004, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: Alan Liu