MAY, J.

A borrower appeals a final judgment of foreclosure, raising four issues. We find merit in the standing argument and reverse.

The borrower executed a promissory note and mortgage in favor of ComUnity Lending, Incorporated, a California Corporation. The note attached to the complaint did not contain a blank endorsement, but the note introduced at trial did.

The loan was securitized pursuant to a pooling and servicing agreement and assigned to the loan trust Washington Mutual Mortgage Pass-Through Certificates for WMALT Series 2007-OA4 ("Trust"). Washington Mutual Bank ("WaMu") then became the servicer of the loan. The Federal Deposit Insurance Corporation acquired some of WaMu's assets and liabilities and sold them to JPMorgan Chase Bank, N.A. ("Chase"). Chase then became the servicer.

The borrower defaulted. WaMu sent the borrower a "Notice of Collection Activity" letter ("acceleration letter"), advising of thirty days to cure the default or the loan would be accelerated. The borrower failed to cure the default.

On October 19, 2009, U.S. Bank ("bank") filed a foreclosure action and attached the mortgage, note, and a lis pendens. At the non-jury trial, the borrower and bank stipulated to the note and mortgage attached to the complaint and the borrower's receipt of the acceleration letter.

The bank called a research officer from Chase, who testified over the borrower's objection,1 that the Trust obtained the loan on May 1, 2007. WaMu serviced the loan on behalf of the Trust until Chase acquired servicing rights in September 2008. The bank also presented a document custodian, who testified that the bank's law firm received the original note, but lost it. A copy of the note was introduced as a true and correct copy of the original. On cross-examination, the borrower introduced an assignment of mortgage, dated October 20, 2009, the day after the bank filed its complaint.

The borrower argues the bank lacks standing because it was not the owner or holder of the note when the suit was filed. The bank responds that the testimony sufficiently established standing. We agree with the borrower and reverse.

"`Whether a party is the proper party with standing to bring an action is a question of law to be reviewed de novo.'" LaFrance v. U.S. Bank Nat'l Ass'n, 141 So.3d 754, 755 (Fla. 4th DCA 2014) (quoting Elston/Leetsdale, LLC v. CWCapital Asset Mgmt. LLC, 87 So.3d 14, 16 (Fla. 4th DCA 2012)).

"[T]he party seeking foreclosure must demonstrate that it has standing to foreclose." McLean v. JP Morgan Chase Bank Nat'l Ass'n, 79 So.3d 170, 173 (Fla. 4th DCA 2012). "`A party must have standing to file suit at its inception and may not remedy this defect by subsequently obtaining standing.'" Matthews v. Fed. Nat'l Mortg. Ass'n, 160 So.3d 131, 133 (Fla. 4th DCA 2015) (quoting Venture Holdings & Acquisitions Grp., LLC v. A.I.M. Funding Grp., LLC, 75 So.3d 773, 776 (Fla. 4th DCA 2011)).

In a similar case, the Second District reversed a summary judgment of foreclosure because the bank did not have standing. Focht v. Wells Fargo Bank, N.A., 124 So.3d 308, 309 (Fla. 2d DCA 2013). There, the loan was transferred from the original lender, BNC Mortgage, Inc., into a trust with Wells Fargo as trustee. Id. Wells Fargo filed a foreclosure complaint. Id.

The original note had a blank endorsement on the back of the note, but was not in the record, so it was unknown whether the endorsement was dated. Id. at 311. The trial court entered summary judgment for the bank, and the borrower appealed. Id.

The Second District reversed. Id. at 309. Nothing in the record established that Wells Fargo had possession of the note. Id. at 311. And, the bank could not prove standing at the time it filed the complaint. Id.

Here, the note filed with the complaint did not contain a blank endorsement. The blank endorsement on the copy filed at trial was undated, and no one was able to testify to when the endorsement occurred. The bank's witnesses established only that the bank had standing at the time of trial, but not at the time it filed its complaint. In addition, the borrower introduced the assignment of mortgage, dated the day after the complaint was filed. Like Focht, the bank failed to prove standing.

For this reason, we reverse.

Reversed.

CIKLIN and LEVINE, JJ., concur.