1. Limitless Poentials, Inc. vs. Quilala, G.R. No. 157391, July 31, 2005. – “stipulation pour autrui”2. So Ping Bun vs. CA, 373 Phil 532 (1999) – requisites of “tortious interference”3. Arrogante vs. Deliarte, G. R. No. 152132, July 24, 2007 – elements of a valid contract4. Jardine Davies, Inc. vs. CA, 389 SCRA 204 – effect if the period given to party was founded upon or supported by any consideration5. Sps. Ermitaño vs. CA, G.R. No. 127246, April 21, 1999 – “contract of adhesions”6. Ong vs. Ong, G.R. No. 67888, October 8, 1985 – gross inadequacy of the price does not invalidate a contract of sale7. De Leon vs. Ong, 611 SCRA 381 – contract of sale and contract to sell distinguished

RESCISSIBLE CONTRACTS8. Heirs of Sofia Quirong v. DBP, G.R. No. 173441, December 3, 2009 9. Oria v. McMicking, 21 Phil. 243 (1912)10. Cabaliw v. Sadorra, G.R. No. L-25650 June 11, 1975, 64 SCRA 31011. China Banking Corporation v. CA, G.R. No. 129644. March 7, 2000

VOIDABLE CONTRACTS12. First Philippine Holdings Corporation v. Trans Middle East (Phils.) Equities Inc., G.R. No. 179505. December 4, 200913. Associated Bank v. Spouses Montano, G.R. No. 166383, October 16, 2009.14. HSBC v. Pauli, G.R. No. L-38303 May 30, 1988, 161 SCRA 63415. Felipe v. Heirs of Maximo Aldon, G.R. No. L-60174 February 16, 1983, 120 SCRA 62816. Armentia v. Patriarca, G.R. No. L-18210, December 29, 1966, 18 SCRA 1253

UNENFORCEABLE CONTRACTS17. Ortega v. Leonardo, G.R. No. L-11311, May 28, 195818. Babao v. Perez, 102 Phil 756 (1957)19. Orduña, et al. v. Fuentebella, et al., G.R. No. 176841, June 29, 201020. Bisaya Land Transportation v. Sanchez, G.R. No. 74623 August 31, 1987, 153 SCRA 532

VOID AND INEXISTENT CONTRACTS21. Pineda v. De La Rama, G.R. No. L-31831 April 28, 198322. Yun Kwan Byung v. PAGCOR, G.R. No. 163553, December 11, 2009.23. Campos and Campos-Bautista v. Pastrana, et al., G.R. No. 175994, December 8, 2009.24. Clanor v. IAC, G.R. No. 73564 March 25, 198825. Lita Enterprises v. IAC, G.R. No. L-64693 April 27, 198426. Frenzel v. Catito, G.R. No. 143958. July 11, 200327. Joaquin Villegas, et al. v. Rural Bank of Tanay, Inc., G.R. No. 161407, June 5, 200928. Queensland-Tokyo Commodities, Inc., et al. v. George, G.R. No. 172727, September 8, 2010

ESTOPPEL/LACHES29. Villegas v. CA, G.R. No. 129977, February 1, 200130. Commissioner of Internal Revenue vs. Kudos Metal Corporation, G.R. No. 178087, May 5, 2010.31. Spouses Chung v. Ulanday Construction, Inc., G.R. No. 156038, October 11, 201032. The Learning Child, Inc. et al. v. Ayala Alabang Village Association, G.R. No. 134269/G.R. No. 134440/G.R. No. 144518, July 7, 2010.