Context: The 3D pen market is expected to grow to $2.7 billion by 2033, up from $1.1 billion in 2024, according to Verified Market Reports (April 23, 2026 report). In 2024, U.S.-based WobbleWorks, a consumer electronics manufacturer that specializes in hand-held 3D drawing devices for children, launched a patent enforcement campaign against rivals Kretrum and MyFirst, asserting EP2928672 (“Hand-held three-dimensional drawing device”). In February 2024, it successfully served an ex parte preliminary injunction (PI) against myFirst Tech Asia at the Spielwarenmesse (Nuremberg Toy Fair), forcing it to clear its booth. It then did the same with Chinese competitors JER and Kretrum at the January 2026 edition of the same fair. Both sets of defendants appealed the PIs. The Landgericht München I (Munich I Regional Court) upheld the latter PI in June (June 12, 2026 ip fray article), confirming the patent’s validity as part of the decision, too. And, in August, the Munich I Regional Court issued fresh PIs against myFirst Tech Asia and Kretrum overand EP3698938 (“Hand-held three-dimensional drawing device”).
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Court and counsel
Court: Presiding Judge Dr. Hubertus Schacht, Judge Dr. Julia Obermeier, and Judge Dr. Sebastian Benz.
Counsel for WobbleWorks: Peterreins Schley Attorneys Dr. Marc Grunwald, Maximilian Groß, and Maximilian Bernschneider, as well as Patent Attorney Dr. Sebastian Höpfner of ZSP.
Counsel for MyFirst/Kretrum: Attorneys Christian-Leopold Zapp, Roman Scheibe, and Patent Attorney Dr. Michael Sturm of Vossius.