Densys, an Israeli oral scanning technology developer, recently filed a patent infringement lawsuit against South Korean dental equipment manufacturer Medit in the U.S. District Court for the District of Delaware.
The lawsuit, filed on June 20, 2025, alleges that Medit’s line of intraoral scanners infringes two key patents owned by Densys, which are considered the foundation of modern digital dentistry.
The patents involved in the lawsuit include U.S. Patent No. 6,402,707 (issued on July 11, 2002) and U.S. Patent No. 8,665,257 (issued on March 4, 2014), which describe “Methods and systems for real-time intraoral acquisition and recording of three-dimensional measurements and images” and “Three-dimensional modeling of the oral cavity” technology, respectively. Dr. Maurice Ernst, the founder of Densys, is the main inventor of these two patents.
According to Densys’s complaint, these patented technologies break through the bottlenecks of early digital impression systems, especially in dealing with the problem of image stitching during the movement of patients, dentists and scanners.
Densys claims that all of Medit’s current intraoral scanner products, including the i900, i900 Classic, i700, i700 Wireless, i600 and i500 series, infringe the two patents.
In addition, the related software involved, such as Medit Scan and Medit Link, are also accused of forming a complete system with the hardware that infringes the patents.
Densys was founded in 2000, and its patented technology is considered the foundation of modern digital dental workflows, especially solving the problem of how to stitch multiple 3D images during the scanning process.
Densys has won a legal victory in a lawsuit against dental technology company 3Shape, and the court ruled that 3Shape willfully infringed its patents. The case is still awaiting final judgment.
In the current lawsuit, Densys not only seeks monetary damages, but also requests the court to issue an injunction to stop Medit’s intraoral scanner sales and require Medit to pay ongoing patent fees.
In addition, Densys has accused Medit of willful infringement, an allegation that could result in compensation of up to three times the normal amount of compensation.
The case is currently being heard in the District Court for the District of Delaware, case number 1:25-cv-00769. Densys is seeking a jury trial in the case and plans to pursue a similar legal strategy as in the 3Shape case.