By Sally Vazquez-Castellanos, Shareholder & Attorney at Castellanos & Associates, APLC, located in DTLA – Los Angeles, California.
As California’s economy continues to evolve around creative industries, intellectual property (IP) is becoming one of the most valuable—and most complex—assets addressed in divorce. Whether it’s a screenplay, software code, trademark, mobile app, or a monetized social media account, intellectual property created or acquired during a marriage can carry significant legal consequences in family court.
This article explores how California law treats IP in the divorce context, using the example of a screenplay to highlight legal principles, valuation concerns, and recent case law.
California’s Community Property Framework
California is a community property state, meaning that most property acquired by either spouse during the marriage is presumed to be jointly owned. This includes intangible assets such as copyrights, royalties, and patents—even when only one spouse’s name appears on the rights or registrations.
California Family Code § 760:
“Except as otherwise provided by statute, all property, real or personal, wherever situated, acquired by a married person during the marriage while domiciled in this state is community property.”
Accordingly, if one spouse authors a screenplay during the marriage, the copyright, underlying rights, and income streams associated with that work may all be classified as community property—regardless of whether only one spouse is listed on the copyright registration or receives the royalties.
Example: A Screenplay Written During Marriage
Consider this scenario: One spouse writes and registers a screenplay during the marriage. Later, the work is licensed to a production company, generating royalties, option fees, or profit participation. Under California law, the copyright and all revenue generated during the marriage from that work are presumptively community property. That means both spouses may be entitled to a share of the income and future licensing rights unless a valid agreement (such as a prenuptial or postnuptial contract) states otherwise.
Even if the project is still in development or has not yet generated income, the potential future value of the screenplay may be subject to division at the time of divorce.
Federal Copyright Law and State Property Rights
Although copyright law is federal in origin, the U.S. Copyright Office acknowledges that state law determines ownership between spouses in community property states like California:
Compendium of U.S. Copyright Office Practices § 503.3:
“State law may affect ownership of a copyright, including whether it is classified as community property when created during marriage.”
This recognition reinforces that registration of a copyright in one spouse’s name does not override the community property presumption under California law.
Mixed Character Assets and the Moore/Marsden Rule
If a screenplay or other creative project began before the marriage but was developed, marketed, or monetized during the marriage, it may be considered a mixed character asset. In such cases, California courts may apply the Moore/Marsden formula to apportion the community and separate property interests.
This method—originally developed to allocate equity in real estate where one spouse owned the home before marriage—has been adapted in some cases to evaluate mixed contributions to business and intellectual property.
Valuation of Intellectual Property
Valuing IP is often a highly technical task. Courts may consider:
Royalties and residuals (past and projected) Publishing or licensing agreements Option contracts Brand or reputation value (goodwill) Market comparables in the same creative or professional field
A forensic accountant or intellectual property valuation expert is often essential in determining how to divide the asset fairly or calculate an equalization payment.
In cases where income continues post-divorce, spouses may agree to share future royalties under a structured settlement, or one spouse may buy out the other’s community interest based on present value.
Relevant Case Law
Several key cases support the treatment of intellectual property as community property in California:
In re Marriage of Worth (1987) 195 Cal.App.3d 768
Held that royalties from a nonfiction book written during marriage were community property, even when received after separation.
Rodriguez v. U.S. (9th Cir. 1980) 629 F.2d 1300
Confirmed that income from copyrighted works created during marriage constitutes community income under California law—even in a federal tax context.
In re Marriage of Elia (1988) 206 Cal.App.3d 1367
Addressed how goodwill and personal reputation—particularly in professional and public-facing fields—can be valued and divided as community property.
In re Marriage of Moore (1980) 28 Cal.3d 366 and
In re Marriage of Marsden (1982) 130 Cal.App.3d 426
Established the formula to apportion community and separate interests when an asset (like a home or business) is developed over time.
Protecting IP Rights During Divorce
Whether you’re the creator or the non-creator spouse, addressing intellectual property early in the divorce process is crucial. Settlement agreements should clearly define:
Ownership and control of the IP Division or assignment of past and future income Responsibilities for licensing, renewals, and enforcement Confidentiality and non-compete considerations, if applicable
Failing to account for future earnings—especially from screenplays, licensing deals, or derivative works—can leave one spouse at a disadvantage later.
Conclusion
In California, a screenplay written during marriage is not just a personal or creative achievement—it is also a marital asset, subject to the same principles of property division as any other jointly acquired asset. As intellectual property becomes more central to how people work, earn, and build value, it’s critical to understand how these assets are treated under family law.
Proper classification, expert valuation, and clear settlement terms can protect both parties’ interests and ensure an equitable outcome.
This article is for informational purposes only and does not constitute legal advice or create an attorney-client relationship. For advice about your specific circumstances, consult a qualified family law attorney in California.
If you have any questions or concerns, please contact Shareholder and Attorney, Sally Castellanos at Castellanos & Associates, APLC, Industrious at Pasaroyo in Pasadena, 251 S. Lake Avenue, Suite 800, Los Angeles, California 91101. Telephone (805) 732-2376 or (323) 655-2105.
