In March 1925, Sonia Delaunay trademarked the term Simultaneous Art to define the geometric often contrasting color designs created for the objects and fashions produced by her own label. 

As written by Bard Graduate Center, "Delaunay was involved in every step of design and production, from the first sketches to the final printing. The graphic range of her tissus simultanés (Simultaneous fabrics) was vast—from strict geometric patterns to more painterly florals. These textiles were often printed by hand using woodblocks to ensure that they maintained the artistic character of the painted originals." (Maison Sonia: Making)