Do you automatically own half the IP created by your spouse?
<p><a href="https://twitter.com/richgel999/status/1334061416433807360" rel="nofollow noreferrer">https://twitter.com/richgel999/status/1334061416433807360</a></p>
<p>This Twitter thread raised an idea I'd never heard before: that in a marriage intellectual property is jointly owned by the spouses, which could prove complicated in divorce, and make an open source license invalid if it wasn't made with the consent of the spouse.</p>
<p>Is there any legal merit to this idea, that without any explicit agreement (or a prenup) your spouse will own half the IP that you create? Do any countries' copyright laws explicitly discuss this situation, or is there any relevant case law?</p>

<p>That is the case in the state of Washington, for example. All property acquired during a marriage is considered community property. This can make things complicated since there are state-specific rules that can arise in case of a divorce (<a href="https://caselaw.findlaw.com/us-federal-circuit/1533724.html" rel="nofollow noreferrer">Enovsys LLC v. Nextel Communications, Inc</a>: the couple declared <em>no</em> community property at the time of the divorce, meaning the wife who was not a party in in infringement case, had no standing – and therefore the infringement suit could procede). <a href="https://www.ipwatchdog.com/2011/11/07/what-if-the-spouse-of-every-inventor-living-in-a-community-property-state-has-an-undivided-interest-in-an-invention/id=20257/#_ftn2" rel="nofollow noreferrer">This page</a> goes into details. There are 9 US states with community property regimes: it is also the law for Sweden, Germany, France and Italy.</p>
<p>In the US, permission from one author is sufficient to constitute &quot;having permission&quot; w.r.t. copyright: an owner of the copyright can license the work, and you do not have to get permission from all owners. This does not invalidate an open source license: spouse 1 can grant such a license even if spouse 2 refuses to grant such a license.</p>
<p><a href="https://casetext.com/case/rodrigue-v-rodrigue" rel="nofollow noreferrer">Rodrigue v. Rodrigue</a>, 218 F.3d 432 partially answers the question in Louisiana specifically w.r.t. copyright. A lower court held that the state-specific quirk of giving a non-author an equal interest in copyrighted IP must be swept away in the interest of uniformity of federal law. The lower court indeed rejected an argument based on <a href="https://www.law.cornell.edu/uscode/text/17/301" rel="nofollow noreferrer">17 USC 301</a> which declares federal law to be superior to legal or equitable rights that are equivalent to that set out in Title 17: but community property law is <em>not</em> equivalent to Title 17, it's much broader. The higher courts reasoning is a tall wall of words which boils down the their conclusion that &quot;we disagree with the district court only to the extent that it held the conflict between Louisiana community property law and federal copyright law irreconcilable absent congressional intercession&quot;, and having found a way that didn't involve Congress, they declared the work-creator to be the sole owner of the IP created during the marriage. See also the myriad citations contained therein. What this case in particular shows is that the specifics of the states community property laws will have an effect on how a courts would rule on such an IP question.</p>

<blockquote>
<p>... any countries' copyright laws ...</p>
</blockquote>
<p>Here in Germany, we don't have a &quot;Copyright&quot; but an &quot;Urheberrecht&quot;.</p>
<p>One of the main differences is that the &quot;Urheberrecht&quot; does not define the copyright as some kind of (negotiable) property which is owned by some person or company;</p>
<p>instead, it defines that as long as the <em>person who created some work</em> is alive, he or she has the exclusive rights on this work (e.g. the right to allow or forbid somebody to copy the work).</p>
<p>So you definitely do <em>not</em> have any rights on the work created by your spouse.</p>
<p>(Neither after a divorcement, nor while you are married.)</p>
<p>And if you have the copyright of some work in one country (e.g. the USA), this does not automatically mean that you have the copyright in another country, too:</p>
<p>Take the picture of the monkey &quot;Naruto&quot; as an example...</p>
<p>So even if the married couple in your example lives in the USA, they are US citizens and they share the copyright in the USA, only one of the two spouses (the one who actually created the item) has the copyright in Germany.</p>

copyright intellectual-property marriage