(September 9, 2021, 9:33 AM EDT) -- ALEXANDRIA, Va. — In a Sept. 7 petition for inter partes review (IPR) filed with the Patent Trial and Appeal Board, a maker of imaging systems for the health care industry asserts that a patented stereophotogrammetry method and device that reconstructs faces and bodies in 3D should be canceled as obvious because it claims “unremarkable” steps such as imaging subjects at predefined distances falling within the device’s depth of field....