Unified is seeking prior art on at least claim 1 of US-8423235-B2, owned by MTEKVision Co. Ltd., an NPE. The '235 patent relates to a vehicle video recording device—essentially an advanced car black box—that records video and also gathers driving-related data. For more information on the patent: https://portal.unifiedpatents.com/patents/patent/US-8423235-B2 View the Similar Documents (patents + scholarly publications) generated by Google Patents: Patents: https://patents.google.com/?q=(~patent%2fUS8423235B2)&before=filing:20090914 NPL: https://patents.google.com/?q=(~patent%2fUS8423235B2)&before=filing:20090914&patents=false&scholar PATROLL researchers are required to use Pearl to generate claim charts. Submitted invalidity charts must address every limitation of the challenged claim. This may require using more than one prior art reference. Each PATROLL researcher can generate up to 30 invalidity claim charts per month using Pearl. These charts can be downloaded then submitted to PATROLL. Click on Pearl AI-Assisted Claim Chart below to get started with Pearl