The appellant, Maoz Betser-Zilevitch (“Mr. Betser”), appealed a decision of the Federal Court (the “Judgment”, 2021 FC 85), dismissing his action against the respondent, PetroChina Canada Ltd. (“PCC”), alleging infringement of his Canadian Patent No. 2,584,627 (the “627 Patent”). Mr. Betser also appealed the decision on costs (the “Costs Judgment,” 2021 FC 151).