Are single-letter programming language names trademarkable?
<p>It's no secret that the name of some programming languages are single-letter (sometimes with some non-letter characters) such as C, C++, C#, D, etc.</p>
<p>A <a href="https://law.stackexchange.com/q/54901/34980">previous question</a> asked about the situation of <em>copyright</em> of programming language name(s), and the answer lists Apple's Swift OOP language as an example of <em>trademarked</em> programming language names.</p>
<p>What this post asks is that: are single-letter programming language names <em>trademarkable</em>, both as plain text and as visual design, considering the name in on itself has little to no novelty.</p>

<p>Probably yes. But it is only a trademark violation when used in connection with a sale of good and services in a manner that is suggests affiliation with the programming language.</p>
<p>Thus, you can have a bar named &quot;C++&quot; but not you own programming language or updates to an existing programming language.</p>

<p>In theory, yes. There are examples from some jurisdictions where single letters have been trademarked.</p>
<p>That said, the sorter the word is the more difficult it is to trademark (it must be easy to distinguish from other trademarks). Hence, C++ would be much easier to trademark as a word than just C.</p>

trademark