The document provides a detailed overview of the legal framework surrounding the issuance of notices under section 148 of the Income Tax Act, 1961, highlighting critical issues such as the necessity of serving a valid notice, the time limits for such notices, and judicial interpretations regarding their validity. It discusses various key cases where courts have addressed the consequences of non-service of notice and limitations on reassessment, emphasizing that failure to comply with procedural requirements can render reassessment proceedings illegal. Through cited judicial pronouncements, the document illustrates the importance of the assessing officer's duties in ensuring notices are correctly served and logged within specified timelines to avoid legal challenges to the assessments made.