Densys, an Israeli company known for developing intraoral scanning technology, recently filed a patent infringement lawsuit against South Korean dental technology manufacturer Medit in the U.S. District Court for the District of Delaware. The complaint, filed on June 20, 2025, alleges that Medit's line of intraoral scanners infringes 2 key patents that Densys claims are foundational to modern digital dentistry.
The lawsuit centers on 2 patents owned by Densys, U.S. Patent No. 6,402,707 (issued July 11, 2002): "Method and system for real time intra-orally acquiring and registering three-dimensional measurements and images of intra-oral objects and features" and U.S. Patent No. 8,665,257 (issued March 4, 2014): "Three-dimensional modeling of the oral cavity".
Both patents list Densys founder Dr Maurice Ernst as the principal inventor. According to the complaint, these patents represent breakthrough technology that solved early challenges in digital impression systems, including problems with image stitching when patients, dentists, and handheld scanners move during the scanning process.
Densys alleges that Medit's entire current lineup of intraoral scanners infringes the patents, including the i900 and i900 Classic scanners, the i700 and i700 Wireless scanners as well as the i600 and i500 models.
The complaint also targets related software including Medit Scan and Medit Link, claiming these work together to form complete intraoral scanning systems that violate Densys' patent rights.
Founded in 2000, Densys’ suit claims the company’s patented technology solved the challenge of effectively stitching multiple 3D images into useful digital models when dealing with the natural movement of patients and practitioners during scanning procedures. Densys claims this innovation enabled real-time, full-mouth intraoral scanning that has since become the foundation for modern digital dentistry workflows.
Notably, Densys previously secured a significant legal victory with these same patents. In the case Densys v. 3Shape (W.D. Tex.), a jury found that dental technology company 3Shape willfully infringed the '707 Patent. That case is still pending final judgment, with the court considering enhanced damages for willful infringement.
Densys argues that this previous verdict puts Medit on notice, claiming that as "a significant player in the dental imaging market," Medit should be aware of the willful infringement finding against its competitor and understand that its similar products also infringe the patent.
The complaint goes beyond simple patent infringement, alleging that Medit's actions constitute willful infringement—a more serious charge that can result in enhanced damages up to 3 times the normal award. Densys claims Medit had knowledge of the patents and the previous 3Shape verdict, yet continued developing and selling allegedly infringing products.
In addition to monetary damages and legal fees, Densys is requesting an injunction that could potentially halt sales of Medit's intraoral scanners and ongoing royalty payments from Medit.
The case has been assigned number 1:25-cv-00769 in the U.S. District Court for the District of Delaware, a venue known for handling complex patent disputes. Densys has demanded a jury trial, similar to the successful strategy used in the 3Shape case.
