Computer hardware, namely, trackers for use in determining position and orientation; Sensors for use in tracking the position and orientation of objects; Computer software for surgical planning and navigation; Electronic components for use in tracking and localizing instruments; Data processing apparatus for use with surgical tracking systems; Computer software for planning, visualizing, and simulating image-guided interventional procedures; Electronic control units for operating robotic positioning devices; Position-tracking software for registering instruments relative to X-ray or other medical images; Computer software for application to three-dimensional registration and/or referencing patient data by producing markings; Proprietary planning and navigation software that combines X-ray and Navigation for interventional procedures; Software and hardware for use with medical imaging devices, in particular for generating and manipulating images obtained by the imaging devices; Planning software and programs for use in conducting neurosurgical, orthopedic, radiotherapeutic or radiosurgical procedures; planning software and programs for application in ear, nose and throat (ENT) surgery

Surgical navigation systems comprising computer hardware, computer software, and trackers; Medical apparatus for image-guided surgery; Medical positioning and guidance instruments; Tracking arrays and reference markers for use in image-guided surgery; Surgical and medical instruments for tracking and navigating surgical and medical devices; Medical robotic positioning devices for use in image-guided minimally invasive surgery; Surgical instrument positioning arms for use with X-ray guided or fluoroscopy-guided procedures; Medical apparatus for percutaneous, image-guided interventions, namely, positioning systems for guiding surgical instruments; Surgical navigation systems comprising robotic positioning arms, trackers, and software for guiding surgical instruments; Medical devices, namely, intra-operative, image-guided localization systems for surgical applications, in particular for neurosurgical, orthopaedic, stereotactic and radiosurgical applications and for applications in ear, nose and throat (ENT) surgery; Medical referencing markings and referencing marker arrays attached to medical and surgical instruments and attached to patients for referencing and/or registering purposes.