A Practice Note discussing discovery motion practice related to local patent rule disclosures in the US District Court for the District of Maryland. This Note discusses motions to amend patent disclosures under D. Md. Local Patent Rule 804.6 and motions to strike or compel an adversary to supplement untimely or inadequate patent disclosures. It discusses why a party may want to bring a motion, grounds for bringing a motion, and when and how to bring a motion under the court's local civil rules.