This is an appeal by a creditor in a Chapter 11 bankruptcy proceeding challenging an order of the bankruptcy court, affirmed by the district court, precluding it from filing a proof of claim after the time fixed for the filing of proofs of claims had passed. We find no error and affirm.
I.
In 1979, the creditor, Biscayne 21 Condominium, Inc. (Biscayne), a condominium association, purchased a residential condominium, known as Biscayne 21, from the debt- or, South Atlantic Financial Corporation (SAFCO), a Florida corporation engaged in real estate development. In 1981, Biscayne filed suit against SAFCO in the Florida circuit court alleging that SAFCO had breached its sales agreement with Biscayne by misrepresenting the condition of the condominium and by failing to make certain repairs to it. This litigation was pending when SAFCO filed a voluntary рetition for reorganization under Chapter 11 of the Bankruptcy Reform Act of 1978 (the Bankruptcy Code) in the Southern District of Florida and was stayed on October 13, 1982.
In December of 1982, SAFCO filed a schedule of claims and statement of financial affairs in the bankruptcy court, pursuant to Interim Bankruptcy Rule 1007(b). 1 In that schedule, SAFCO listed Biscayne as a “disputed” creditor. On June 22, 1983, the bankruptcy court set August 4, 1983, as the last day (“bar dаte”) for creditors whom SAFCO had listed in its schedule as disputed, contingent, or unliquidated to file proofs of claim. Biscayne received a copy of this order but did not file a proof of claim before the bar date. Biscayne’s attorney did, however, file a notice of appearance on July 1, 1983, in which she requested the court to forward her copies of all future pleadings and orders filed in the case.
On August 18, 1983, SAFCO requested the bankruptcy court to estimate certain contingent or unliquidated claims pursuant to section 502(c) of the Bankruptcy Code. 11 U.S.C. § 502(c) (1982). 2 Because Bis *816 cayne had not submitted a proof of claim by the bar date, SAFCO did not request the court to estimate its claim. Upon receiving a copy of SAFCO’s pleading, Biscayne’s counsel apparently became aware that Biscayne hаd failed to submit a proof of claim, and, on August 22, counsel requested the bankruptcy court to allow Biscayne to file an untimely proof of claim.
The court heard Biscayne’s request on August 31. At that hearing, Biscayne’s counsel readily admitted that her client had failed to submit a timely proof of claim solely because of her error: she explained that Biscayne had employed her after the Chapter 11 proceeding began and it was her impression that its previous attorney had filed a proof of claim. 3 The court concluded that counsel’s error in assuming that her predecessor had filed a proof of claim in behalf of Biscayne did not constitute “excusable neglect,” and it denied Biscayne’s request to file an untimely proof. The court, however, explored the possibility of whether Biscayne had done anything in the reorganization proceeding that could be treated as the filing of an informal proof of claim; if so, the court could consider Biscayne’s request as a motion to amend such proof of claim. After entertaining argument of counsel on this point, the court concluded that Biscayne’s only prior activity in the case, the appearance of its attorney, could not be considered an informal proof of claim and that Biscayne’s claim had been foreclosed. On September 21, Biscayne moved the court to reconsider its ruling and to stay the Chapter 11 proceeding in the interim. This motion was denied on October 18.
On October 26, Biscayne appealed the bankruptcy court’s September 1 and October 18 orders. 4 Therеafter, it moved the district court to stay the Chapter 11 proceeding in. the bankruptcy court pending its disposition of Biscayne’s appeal. Following a hearing, the district court entered an order, dated February 8, 1984, affirming the bankruptcy court’s orders and denying *817 Biscayne’s requested stay. This appeal followed.
II.
A.
Under Chapter 11 of the Bankruptcy Code only certain claimants are required to file proofs of claim in order to participate in a reorganization. Section 1111(a) of the Code, 11 U.S.C. § 1111(a) (1982), provides that all claims listed by a debtor in its schedule of claims are deemed to be filed unless the debtor lists a claim as “disputed, contingent, or unliquidated.” Because • SAFCO listed Biscayne’s claim as disputed, Biscayne was required to file a proof of claim by the bar date; otherwise, it would be forever foreclosed from participating in SAFCO's rеorganization.
Although the Bankruptcy Code informs us as to which creditors must file proofs of claim in order to participate in a reorganization, it is silent as to the time within which claims must be filed. This subject is covered by the Bankruptcy Rules. 5 Rule 3003(c)(3), which governs the time for filing claims in Chapters 9 and 11 cases, provides that “[t]he court shall fix and for cause shown may extend the time within which proofs of claim or interest may be filed.” The bankruptcy court here fixed August 4, 1983, as the time by which proofs of claim were required to be filed in SAFCO’s reorganization. Because Biscayne failed to file a proof of claim by that time, it was barred from participating in SAFCO’s reorganization unless it could establish sufficient grounds for the filing of a late proof of claim.
Rule 3003(c)(3) authorizes the court to extend the time for the filing of a proof оf claim for “cause shown.” This rule must be read, however, in conjunction with Rule 9006(b).
See In re O.P.M. Leasing Services, Inc.,
when an act is required or allowed to be done at or within a specified period by these rules or by a notice given thereunder or by order of court, the court for cause shown may at any time in its discretion (1) with or without motion or notice order the period enlarged if the request therefor is made before the expiration of the pеriod originally prescribed or as extended by a previous order or (2) on motion made after the expiration of the specified period permit the act to be done where the failure to act was the result of excusable neglect.
(Emphasis added.) Rule 9006(b) makes it clear that, when a party moves for an extension of time after the expiration of the time period, it must show that its failure to act before the сourt’s deadline was the result of excusable neglect.
Courts have interpreted “excusable neglect” under Rule 9006(b) and its identically worded predecessor, Rule 906(b), as requiring the movant to show that
“
‘the failure to timely perform a duty was due to circumstances which were beyond the reasonable control of the person whose duty it was to perform.' ”
In re Gem Rail Corp.,
Although this circuit has not had occasion to construe excusable neglect under either Rule 9006(b)(1) or Rule 906(b), the definition of excusable neglect employed by the courts cited above comports with this circuit’s construction of excusable neglect under Fed.R.Civ.P. 6(b)(2), from which Rule 9006(b) and Rule 906(b) are derived.
See
Fed.R.Bankr.P. 9006 advisory committee nоte. For instance, in
McLaughlin v. City of LaGrange,
Biscayne acknowledges that its failure to file a timely proof of claim was not the result of anything beyond its reasonable control, such as lack of notice of the bar date, but was the result of its counsel’s failure accurately to determine whether a proof of claim had already been filed, a fact she could easily have verified by an examination of the bankruptcy court records. Biscayne contends, nevertheless, that the bankruptcy court abused its discretion when it failed to find “excusable neglect” and allow Biscayne to file a late proof of claim, because such would not have prejudiced any of the other parties participating in SAFCO’s reorganization. Whether a late filing by Biscayne would have prejudiced SAF'CO, its shareholders, or other creditors was not, however, a relevant inquiry for the cоurts below. Although some courts have examined the prejudicial effect of a late filing in determining whether excusable neglect exists,
see, e.g., In re O.P.M. Leasing Services, Inc.,
B.
It is well established that a creditor need not timely file a letter perfect proof of claim before the expiration of the time fixed by the court for the filing of such and that “in a bankruptcy case, amendment to a claim is freely allowed where the purpose is to cure a defect in the claim as originally filed, to describe the claim with greatеr particularity or to plead a new theory of recovery on the facts set forth in the original claim.”
In re International Horizons, Inc.,
Applying these principles, courts have deemed an amendable proof of claim “filed” where, for example, the creditor, in applying to the court for relief from an automatic stay, set forth in great detail the nature of his claim,
In re Guardian Mortgage Investors,
This case law makes it clear that SAFCO’s knowledge of Biseayne’s claim, SAFCO’s listing of Biscayne as a “disputed” creditor in its schedule of claims and statement of financial affairs, and Biscayne’s state court litigation with SAFCO did not provide the bankruptcy court a sufficient basis for allowing Biscayne to file an amended proof of claim. The only question before the courts below, therefore, was whether the notice of appearance, filed by Biscayne’s attorney, constituted an amendable proof of claim.
The notice of appearance requested only that the bankruptcy court forward counsel’s copies of all future pleadings filed in the Chapter 11 proceeding. It did not provide the bankruptcy court with any informаtion as to the existence, nature, or amount of Biscayne’s claim against SAF-CO. Nor did it, in any way, evidence an intent on the part of Biscayne to hold SAF-CO liable for that claim. As SAFCO has correctly pointed out, a notice of appearance might be filed by an attorney for a variety of reasons. An attorney might “appear” in a case, for example, for no other purpose thаn to monitor the progress of the proceeding. In short, there is nothing in the filing of a notice of appearance which, in itself, puts a bankruptcy court on notice that the party for whom the attorney is appearing has a claim against the debtor, much less the nature or amount of any such claim. The bankruptcy court did not err in refusing to treat counsel’s notice of appearаnce as an amendable proof of claim by Biscayne, and its decision, as well as that of the district court is, accordingly,
AFFIRMED.
Notes
. Rule 1007(b) provided:
(b) List of Creditors and Equity Security Holders. The debtor shall file with the court (1) a list of the debtor’s creditors of each class, showing the amounts and character of their claims and securities and, so far as known, the name and address or place of business of each creditor and a statement whether the сlaim is disputed, contingent or unliquidated as to amount, and (2) a list of the debtor's equity security holders of each class showing the number and kind of interests registered in the name of each holder, and the last known address or place of business of each holder.
. Section 502(c) provides:
(c) There shall be estimated for purpose of allowance under this section—
(1) any contingent or unliquidated claim, fixing or liquidation of which, as the сase may be, would unduly delay the closing of the case; or
*816 (2) any right to an equitable remedy for breach of performance if such breach gives rise to a right to payment.
. Biscayne’s attorney did not state, and the record does not otherwise indicate, the date Biscayne employed her to represent it in the Chapter 11 reorganization proceeding. What the record indicates is what we have recited in the text supra : that counsel noticed her appearance for Biscayne on July 1, 1983, 9 days after the court’s order setting the August 4 bar date; that Biscayne had received a copy of that order and that counsel requested the court to furnish her copies of all pleadings and orders filed thereafter. It is not disputed that Biscayne’s new counsel knew that the August 4 bar date had been set; what she did not know, according to her subsequent representation to the court, was that her predecessor had not filed a proof of claim in behalf of Biscayne.
. In the district court Biscayne also claimed, as it does here, that the district court and the bankruptcy court were without subject matter jurisdiction of SAFCO's Chapter 11 proceeding, in light of the Supreme Court’s decision in
Northеrn Pipeline Construction Co. v. Marathon Pipe Line Co.,
Recently, in
In re Committee of Unsecured Creditors of F S Communications Corp.,
. The present bankruptcy rules went into effect on August 1, 1983, replacing the interim local rules adopted by the bankruptcy court of the Sоuthern District of Florida. These rules, and not the interim rules, governed the filing of proofs of claim in this case.
. In
Bonner v. City of Prichard,
. Biscayne cites
Fausett v. Murner,
Additionally, Biscayne has forwarded to us, as supplemental authority,
In re Modular Engineering Corp.,
Although, previously, courts, applying former Bankruptcy Rule 509(c) and present Bankruptcy Rule 5005(b), have treated a proof of claim filed with a trustee or debtor-in-possession as having been filed with the bankruptcy court, they can only do so now when it is clear that the creditor intended to file its proof of claim with the bankruptcy court but erroneously delivered it to the trustee or debtor-in-possession.
See
Fed.R. Bankr.P. 5005(b);
In re Evanston Motor Co.,
