diff --git a/Pentaradio_2009.mw b/Pentaradio_2009.mw
index 3aac8c45..8f217a65 100644
--- a/Pentaradio_2009.mw
+++ b/Pentaradio_2009.mw
@@ -15,6 +15,9 @@
 * [http://androidguys.com/?p=4707 Use Your G1 As… A Metal Detector?]
 * [http://musicmachinery.com/2009/04/27/moot-wins-time-inc-loses/ Time Mag Worlds’s most influential person is moot ] auch [ http://musicmachinery.com/2009/04/15/inside-the-precision-hack/ explanation ]
 
+== Softwarepatent des Monats ==
+* [http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=7,536,726 Microsoft Patents the Crippling of Operating Systems]
+
 ==news==
 * [http://www.boingboing.net/2009/04/29/warner-music-claims.html Warner Music claims Lessig is a pirate, has his presentation taken off YouTube]
 * [http://adblockplus.org/blog/attention-noscript-users NoScript = Malware?]