OPINION AND ORDER
This is an action for the collection of money owed on certain promissory notes executed by codefendant Consolidated Mortgage and Finance Corporation (“Consolidated”) and purchased by plaintiff Federal Deposit Insurance Corporation (“FDIC”) on March 31, 1978 upon the closing of the Banco Crédito y Ahorro Ponceño by the Puerto Rico Secretary of the Treasury. Codefendants José A. Suro and others executed continuing letters of guaranty as joint surety (“fiador solidario”)1 to se*457cure payment of the notes. FDIC filed a complaint against Consolidated, Suro and the other guarantors of the promissory notes. FDIC, however, did not sue Suro’s wife, Gloria Llombart (“Llombart”), or the conjugal partnership constituted by Suro and Llombart. On July 14, 1988, the Court entered judgment against Suro jointly and severally in the amount of $9,810,925.20.2 See Federal Deposit Insurance Corp. v. Consolidated Mortgage & Finance Corp., 691 F.Supp. 557 (D.P.R.1988). Pending before the Court is Suro’s motion to vacate a writ of attachment against stock certificates of Borinquen Memorial Parks, Inc., he owns with his wife as community property.
Upon consideration of oral arguments and the memoranda of law submitted by FDIC, Suro, Llombart and the conjugal partnership of Suro and Llombart, the Court finds that Llombart and the conjugal partnership are not liable for the judgment against Suro and FDIC is not entitled to execute its judgment upon any property of the conjugal partnership.
FDIC contends that Rule 51.7 of the Puerto Rico Rules of Civil Procedure3 authorizes this Court to bring Llombart and the conjugal partnership into this action and to hold them responsible for the obligations incurred by Suro. We disagree based on the Puerto Rico Supreme Court opinion in Pauneto v. Nunez, 115 D.P.R. 591 (1984).
In Pauneto, the plaintiff brought a collection action against defendant; the plaintiff did not sue defendant’s wife or the conjugal partnership constituted by them. Two years after the entry of judgment against defendant, the plaintiff sought to hold jointly liable defendant’s wife and the conjugal partnership composed by them under Rule 51.7.
The court found that P.R.Civ.Proc.R. 51.7 has a limited application. It applies only when: (1) there is a “previous joint liability arising from a contractual ‘obligation;’ and 2) that the persons against whom the Rule is invoked could have been sued and summoned when the action was filed.” 115 T.P.R. 777, 783 (emphasis added). In discussing the first prong of the test, the court held that joint liability does not necessarily exist between the spouses and the conjugal partnership. The court noted that under the Puerto Rico Civil Code joint obligations must be clearly expressed in writing and cannot be presumed. This principle does not imply that “the spouses, as individuals, are jointly liable for all the obligations of the marital community or vice versa.” Id. at 784. The conjugal partnership is a separate legal entity from the spouses that comprise it. Id. at 781. Although there exists a rebuttable presumption that debts and obligations contracted during the marriage by either of the spouses can be charged to the community property, this presumption is “not synonymous with joint liability.”4 Id. at 784; Civil *458Code, 31 L.P.R.A. sec. 3661. The court therefore declined to apply Rule 51.7 to judgment debtor’s spouse and conjugal partnership who were non-parties to the action.
Similarly, we must find that Llombart and the Suro-Llombart conjugal partnership are not bound by the judgment entered against Suro because joint liability of the spouse or the conjugal partnership cannot be presumed by the fact that only one of the spouses assumed an obligation. There is no evidence in the record that Llombart gave Suro an express mandate to administer and represent their community property. Thus, there exists no contractual joint obligations among Suro, Llombart and their conjugal partnership. FDIC cannot plead ignorance since it was aware that Suro was married because said fact is stated in the promissory notes and the letters of guaranty executed by Suro.5 FDIC could have sued Suro’s wife and the Suro-Llombart conjugal partnership and chose not to.6 It cannot now request that they be legally bound to the judgment entered against Suro.
Moreover, we note that even if FDIC had sued Llombart and the Suro-Llombart conjugal partnership, said cause of action would have been dismissed. In WRC Properties, Inc. v. Heriberto Santana, 116 D.P.R. 127 (1985), the plaintiff entered into a lease contract with the principal debtor, and defendant agreed in writing to be a joint surety for the principal debtor. Defendant signed the joint surety contract in his individual capacity and in his representative capacity of the conjugal partnership. The surety’s wife did not sign the joint surety contract. The principal debtor breached the lease contract. Plaintiff then sued the principal debtor and obtained a default judgment against said debtor. Later, plaintiff sued the joint surety and the conjugal partnership composed of the surety and his wife. In examining the facts of the case, the court found that the underlying lease contract had no connection to the conjugal society and that it was for the benefit of the principal debtor, a corporation. The court concluded that the joint surety could not obligate the conjugal partnership nor his spouse personally. Since the creditor knew that the joint surety was married and it did not request the signatures of both spouses, it limited the terms of the guaranty to the spouse who signed the surety contract. The court vacated the judgment entered against the conjugal partnership.
Here, FDIC was aware of the existence of the conjugal partnership since it clearly appears from the notarized letters of guaranty that Suro was married. Suro’s obli*459gation as a joint guarantor of Consolidated was not conjugal in nature inasmuch as the commercial loans taken by Consolidated had nothing to do with community property. By accepting Suro’s signature only on a joint surety contract, FDIC is foreclosed from holding Suro’s wife and conjugal partnership liable for the debts. Id. at 135-36. Hence, Suro, in his individual capacity, is solely responsible along with the other named codefendants.
WHEREFORE, the motion to vacate the writ of attachment imposed on the stock certificate is hereby GRANTED. Accordingly, FDIC is hereby ordered to return the stock certificates of Borinquen Memorial Parks, Inc., number 18, issued on May 31, 1978.
IT IS SO ORDERED.