British artist Rob Munday has filed a lawsuit against Chris Levine, claiming he is the co-creator of two of the most recognizable portraits of Queen Elizabeth II—Equanimity and Lightness of Being—which Levine has for years presented as solely his own work.

The dispute, filed in the High Court, centers on the 2004 holographic portraits commissioned by the Jersey Heritage Trust. Munday alleges Levine and his company, Sphere 9, violated his moral rights by failing to credit him as a co-author. The works, both held in London’s National Portrait Gallery, were created using holography technology that renders three-dimensional images through light projection and multiple cameras.

According to court documents reviewed by the Guardian, Munday claims that Levine relied on his technical and artistic expertise to realize the portraits. “I’ve been going through this cycle for 20 years,” Munday, who began working in holography in the early 1980s, told the Guardian. “It felt like this had to be fought now or never.”

Levine, who shares copyright in the works, has not yet filed a defense. In a statement, he rejected Munday’s claims, d...