diff --git a/corporate/trademarks.mdwn b/corporate/trademarks.mdwn
index 80ba26c7..1205bd8f 100644
--- a/corporate/trademarks.mdwn
+++ b/corporate/trademarks.mdwn
@@ -43,6 +43,12 @@ OpenSAF is a [Registered Trademark](https://tsdr.uspto.gov/#caseNumber=77923567&
 
 The OpenSAF trademark is managed by the [OpenSAF](/projects/opensaf/) project.
 
+## Wesnoth
+
+Battle for Wesnoth is a [Registered Trademark](https://tsdr.uspto.gov/#caseNumber=87040364&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch) of Software in the Public Interest, Inc. in the United States.
+
+The Wesnoth trademark is managed by the [Wesnoth](/projects/wesnoth/) project.
+
 # Filing Deadlines
 
 * File a Declaration of Use (or Excusable Nonuse) between the 5th and 6th years after registration