diff --git a/share/xml/trademarks.ent b/share/xml/trademarks.ent
index 12714100e8..8d52fa2abd 100644
--- a/share/xml/trademarks.ent
+++ b/share/xml/trademarks.ent
@@ -62,6 +62,9 @@
   Limited.</para>">
 <!ENTITY arm "<trademark xmlns='http://docbook.org/ns/docbook' class='registered'>ARM</trademark>">
 
+<!-- http://www.bluetooth.com/sig/trademark.use.asp -->
+<!ENTITY bluetooth "<trademark xmlns='http://docbook.org/ns/docbook' class='registered'>Bluetooth</trademark>">
+
 <!ENTITY tm-attrib.cisco "<para xmlns='http://docbook.org/ns/docbook'>Cisco, Catalyst, and IOS are
   registered trademarks of Cisco Systems, Inc. and/or its affiliates
   in the United States and certain other countries.</para>">
@@ -93,6 +96,10 @@ Coverity, Inc.</para>">
 <!ENTITY tm-attrib.cvsup "<para xmlns='http://docbook.org/ns/docbook'>CVSup is a registered trademark of
   John D. Polstra.</para>">
 
+<!-- http://www.epson.com/cgi-bin/Store/AboutTrademarkInfo.jsp -->
+<!ENTITY epson.perfection "<trademark xmlns='http://docbook.org/ns/docbook' class='registered'>EPSON
+  Perfection</trademark>">
+
 <!ENTITY tm-attrib.freebsd "<para xmlns='http://docbook.org/ns/docbook'>FreeBSD is a registered trademark of
   the FreeBSD Foundation.</para>">