The document discusses the "Duty of Disclosure" requirement under the Indian Patents Act for patent applications filed in India. It provides details on the history and interpretation of Section 8 of the Act, which mandates disclosing information on corresponding foreign patent applications. It outlines the time limits and details to be provided, and consequences of non-compliance such as grounds for pre-grant opposition, post-grant opposition, and revocation. It also summarizes two court cases where patents were revoked for violating Section 8 by not submitting information on foreign applications.