GIFReader.st
changeset 3902 54d503c6e50b
parent 3901 f2c56662a45e
child 4105 c1a6b872831b
--- a/GIFReader.st	Fri Feb 17 13:02:33 2017 +0100
+++ b/GIFReader.st	Fri Feb 17 13:11:15 2017 +0100
@@ -59,10 +59,15 @@
 
     Notice:
         there has been some annoyance regarding a patent on the compression algorithm
-        used in gif. This patent is now obsolete. However, there is no warranty from
-        exept, regarding any legal problems, when using GIF.
-        We therefore highly recommend to use newer (and especially: royalty-free) formats,
-        such as PNG.
+        used in gif. There is no warranty from exept, regarding any legal problems, when using GIF.
+        We therefore highly recommend to use newer (and especially: royalty-free) formats, such as PNG.
+
+        This patent is now obsolete: 
+            The United States LZW patent expired on 20 June 2003. 
+            The counterpart patents in the United Kingdom, France, Germany and Italy 
+            expired on 18 June 2004, the Japanese patents expired on 20 June 2004, 
+            and the Canadian patent expired on 7 July 2004.
+            Consequently, the GIF format may now be used freely.
 
     [See also:]
         Image Form Icon