diff --git a/brand/index.html b/brand/index.html
index e4425bf..7afe1fa 100644
--- a/brand/index.html
+++ b/brand/index.html
@@ -10,7 +10,7 @@
 <meta property="og:type" content="website">
 <meta property="og:site_name" content="Theseus.X">
 <meta property="og:title" content="Theseus.X brand kit">
-<meta property="og:description" content="Compass mark, wordmark, avatar, banner, favicon, colour palette. All SVG, downloadable, MIT.">
+<meta property="og:description" content="Compass mark, wordmark, avatar, banner, favicon, colour palette. All SVG, downloadable. The marks are reserved: use them to refer to Theseus, not as your own.">
 <meta property="og:url" content="https://theseus.x/brand/">
 <meta property="og:image" content="https://theseus.x/brand/banner.svg">
 <meta name="twitter:card" content="summary_large_image">
@@ -144,7 +144,7 @@
   <a href="#banner"     title="Social banner"              ><span class="ic" aria-hidden="true">🖼</span><span class="lb">Banner</span></a>
   <a href="#palette"    title="Colour palette"             ><span class="ic" aria-hidden="true">🎨</span><span class="lb">Palette</span></a>
   <a href="#typography" title="Typography"                 ><span class="ic" aria-hidden="true">🅰️</span><span class="lb">Typography</span></a>
-  <a href="#usage"      title="Usage &amp; licence"        ><span class="ic" aria-hidden="true">📜</span><span class="lb">Usage</span></a>
+  <a href="#usage"      title="Usage &amp; trademark"        ><span class="ic" aria-hidden="true">📜</span><span class="lb">Usage</span></a>
 </aside>
 
 <header class="hero">
@@ -264,16 +264,20 @@
 </section>
 
 <section id="usage">
-  <h2>Usage &amp; licence</h2>
-  <p class="lede">All assets are MIT. Reuse them for third-party tools that integrate with
-     Theseus.X (BCNR name explorers, wallet bridges, blog posts, review sites). Keep the compass
-     proportions intact and don't recolour the acid to a similar-but-different green — palette
-     drift is what makes brands look untrustworthy over time.</p>
+  <h2>Usage &amp; trademark</h2>
+  <p class="lede">These files are the marks of Theseus and Silent Mode, not open-licensed artwork:
+     the code is MPL-2.0, the name and the compass are reserved, and the
+     <a href="https://code.silentmode.st/silentmode/theseus/src/branch/master/TRADEMARKS.md">trademark note</a> says what that allows. Use them to refer to Theseus in
+     third-party tools that integrate with Theseus.X (BCNR name explorers, wallet bridges, blog
+     posts, review sites), never as your own mark. Keep the compass proportions intact and don't
+     recolour the acid to a similar-but-different green — palette drift is what makes brands look
+     untrustworthy over time.</p>
   <ul style="color:var(--mut);font-size:14px;padding-left:1.2rem">
     <li><b style="color:var(--ink)">Do</b> use the mark to indicate "opens in Theseus" or "supports BCNR".</li>
     <li><b style="color:var(--ink)">Do</b> shrink to the favicon at 16×16 — the SVG scales cleanly.</li>
     <li><b style="color:var(--ink)">Do</b> use the monochrome logo where the acid green would clash.</li>
     <li><b style="color:var(--ink)">Don't</b> imply endorsement of a specific product without asking.</li>
+    <li><b style="color:var(--ink)">Don't</b> ship a fork, a product or a name under this name or mark — a fork is welcome under its own.</li>
     <li><b style="color:var(--ink)">Don't</b> stretch, skew, or re-tint the compass.</li>
     <li><b style="color:var(--ink)">Don't</b> introduce a second accent colour — acid green is the only one.</li>
   </ul>