Your point sounds reasonable, but there&#x27;s a good reason to block first sale.<p>Suppose I run a firm that sells custom men&#x27;s clothing, that has a patent to, say, change color and temperature at the wearer&#x27;s preference. Each outfit has to be personally tailored by a professional designated by our company.<p>Now, perhaps a high-end men&#x27;s clothing retailer begins selling my clothing and tailors it in-house. The quality is comparable and they compensate my company. So far so good, right?<p>Well, what if quality <i>isnt</i> comparable?  What if the stitching was improperly done and felt too tight, or unraveled over time?  Even if the customer knew that the &quot;re&quot;-seller wasn&#x27;t an official associate, the damage to our brand would already be done.<p>And that&#x27;s why first sale should be at the discretion of the patent holder.