MEMORANDUM OPINION AND ORDER
Presently before this court is a motion by Plaintiff United Air Lines (“UAL”) to reconsider our Memorandum Opinion and Order of December 4, 1995, wherein we granted in part and denied in part UAL’s motion for summary judgment on Counts I-Y of its complaint and Counts I — III of ALG’s counterclaims. 1 Although we decline to address three of the arguments raised by UAL in its motion for reconsideration, we have requested the parties to brief the issue of whether ALG had waived its defenses to enforcement of the Guarantee. After careful consideration of the parties’ memoranda, we now grant UAL’s motion for reconsideration and grant summary judgment to UAL on all counts of the complaint and Counts I — III of ALG’s counterclaims.
We assume familiarity with our prior opinion, 2 and therefore only briefly discuss those facts relevant to the instant decision. UAL agreed in 1993 to lease a 747 aircraft to ALG Trust in exchange for rental payments and various other fees. In order to persuade UAL to enter into to this lease agreement (the “Lease”), ALG agreed to guarantee ALG Trust’s obligations under the Lease. One portion of the eleven and one-half page long guarantee agreement (the “Guarantee”) provided that ALG “absolutely, irrevocably and unconditionally” guaranteed ALG Trust’s obligations under the Lease. Complaint, Ex. E, at 1. In addition, the Guarantee also stated that “[t]he obligations of [ALG] hereunder shall be absolute, unconditional and continuing under any and all circumstances and shall be performed by [ALG] regardless of ... any other circumstance which might otherwise constitute a defense available to or a discharge of the Lessee or the Lessee Trustee in respect of its obligations or liabilities under the Lease Documents.” Id. at 2 (emphasis added). Although UAL cited several other provisions of the Guarantee in its memorandum in support of the motion for summary judgment and its reply memorandum, and argued that it was entitled to judgment as matter of law based on them, it neglected to reference the above quoted language anywhere in its briefing. 3 Consequently, we did not consider this language when ruling on UAL’s motion for summary judgment. Now, however, UAL asks us to reconsider our prior opinion and evaluate the affect of this language in the Guarantee. In addition, UAL argues that to the extent Counts I and III of ALG’s counterclaims seek recision and damages based on *795 the Lease, these claims should not be considered because as a non-party to the Lease, ALG lacks standing to challenge the agreement.
At the outset, we observe that litigants must fight an uphill battle in order to prevail on a motion for reconsideration. “Motions for reconsideration serve a limited function: to correct manifest errors of law or fact or to present newly discovered evidence. Such motions cannot in any case be employed as a vehicle to introduce new evidence that could have been adduced during pendency of the summary judgment motion.... Nor should a motion for reconsideration serve as the occasion to tender new legal theories for the first time.”
Keene Corp. v. International Fidelity Ins. Co.,
We begin with the unassailable proposition that under Illinois law, which both parties agree controls this diversity action, guarantee agreements are to be construed according to the general rules of contract construction.
McLean County Bank v. Brokaw,
Similarly, because ALG agreed to satisfy ALG Trust’s obligations regardless of any “circumstance which might otherwise constitute a defense available to or a discharge of the Lessee or the Lessee Trustee,” ALG has waived any claim of rescission of the Guarantee based on UAL’s nonperformance under the Lease. The fact that ALG styles its argument in the form of a counterclaim is of no moment.
Chrysler Credit Corp.,
UAL also argues that summary judgment is appropriate on the remainder of Counts I and III of ALG’s counterclaims because ALG was not a party to the Lease, and therefore lacks standing to seek its rescission (Count I) or damages for breach of its terms (Count III).
See White Hen Pantry, Inc. v. Cha,
While it is apparent that Illinois law is ambiguous on this point,
Schenley Affiliated Brands Corp. v. Mar-Salle, Inc.,
For the reasons set forth above, we grant UAL’s motion for reconsideration of our Memorandum Opinion and Order of December 4, 1995. Summary judgment is granted to UAL on all five counts of its complaint against ALG, and on Counts I and III of ALG’s counterclaims. The parties shall appear for status on February 20, 1996 at 10:00am as previously scheduled, and shall be prepared to discuss how to proceed on ALG’s remaining counterclaim for intentional interference with a contractual relationship (Count IV). It is so ordered.
Notes
.In that opinion we also denied UAL's motion for judgment on the pleadings on Count IV of ALG’s counterclaims, but UAL does not ask for reconsideration of that ruling.
. We shall hereinafter refer to specific pages of our December 4, 1995 opinion as "Mem.Op. at
. The provision was quoted, however, in paragraph 41 of UAL's Local Rule 12(M) statement.
. Although a defense based on the duty of good faith and fair dealing may be excepted from the general rule permitting waiver,
Chemical Bank v. Paul,
