BearBox LLC sued Lancium LLC for patent infringement and conversion, alleging Lancium stole BearBox's Bitcoin mining technology. The District Court granted summary judgment to Lancium, finding the conversion claim preempted by federal patent law and that BearBox failed to prove Storms' inventorship of the disputed patent. The Federal Circuit affirmed, upholding the preemption ruling because the conversion claim essentially replicated a patent infringement claim. The court also affirmed the exclusion of BearBox's supplemental expert report due to its untimely submission and affirmed the denial of BearBox's inventorship claim due to insufficient evidence.