Madras High Court (Commercial Division), Abdul Quddhose, J. — Arb.O.P. (Com.Div.) No.421 of 2023 and A. No.4638 of 2023, pronounced 18.08.2025 (reserved 11.08.2025): Tenant's petition under S.34, Arbitration and Conciliation Act 1996, to set aside the arbitral award dated 07.03.2023 (rental arrears of Rs.25,66,762/- with 9% interest and 18% GST after adjustment of advance; damages of Rs.29,95,660/- with 9% interest) and the arbitrator's order dated 10.06.2022 in M.A. No.20 of 2022 dismissing her S.16 application, in a dispute where the written lease dated 20.02.2012 expired on 04.04.2018 and possession was surrendered on 29.11.2021. Held: (1) a lessee who holds over after determination of the lease becomes a statutory tenant under S.116, Transfer of Property Act 1882, and the arbitration clause in the expired lease operates as an independent arbitration agreement that continues to bind the tenant — the post-expiry rent/damages claim was arbitrable; the arbitrator's findings on arbitrability had no infirmity, and having consented to the S.11 appointment of the arbitrator (this Court's order dated 05.04.2022), the petitioner was estopped from questioning the reference. (2) Objections that the lease deed was insufficiently stamped and unregistered, never raised before the tribunal (neither in the S.16 application nor in the statement of defence), could not be raised for the first time under S.34; per the Supreme Court's seven Judge Bench judgment dated 13.12.2023 (INRE — Interplay between Arbitration Agreements under the Arbitration and Conciliation Act 1996 and the Indian Stamp Act), stamping objections fall within the arbitral tribunal's ambit, inadequately stamped documents are inadmissible under S.35 Stamp Act but non-stamping/inadequate stamping is a curable defect; SMS Tea Estates (2011 (14) SCC 66) was overruled by that judgment on the stamping question, but its view that the arbitration clause operates as an independent agreement unaffected by registration was not altered, and that judgment did not deal with arbitrability. (3) Under S.19 AC Act 1996 the tribunal is not bound by CPC 1908 or the Evidence Act 1872 and may determine admissibility, relevance, materiality and weight of evidence, so the civil rule that inadmissibility objections may be raised 'at any stage' does not apply stricto sensu in arbitration; raising such a plea first at S.34 would defeat the Act's object of minimizing Court intervention and delaying final adjudication. (4) Young Achievers (2013 (10) SCC 535) (supersession/novation by a new agreement without arbitration clause) and Sure Ranga Murali Reddy (2018 (4) ALT 616) (Telangana HC) distinguished as having no bearing on these facts. No patent illegality; award not opposed to public policy; no S.34 ground made out. Petition dismissed, no costs; connected application closed.