As of both October 31, 2019 and January 31, 2019, we had letters of credit in the aggregate amount of $26.5 million in connection with our operating leases, which were primarily issued under the available sublimit for the issuance of letters of credit in conjunction with a secured credit agreement as disclosed in Note 7.

As of October 31, 2019, future payments under non-cancellable contractual purchases, which relate primarily to infrastructure services and IT software and support services costs, are as follows (in thousands):

Years ending January 31:
2020	$	8,786
2021		12,003
2022		2,309
2023		34,011
2024		—
Thereafter		165,800
	$	222,909

During the third quarter of fiscal year 2020, we entered into multiple contracts for infrastructure services and IT software, with terms ranging from 3 to 8 years, which have increased our purchase obligations in comparison to previous reporting periods.

We are currently involved in, and may in the future be involved in, litigation and subject to claims that arise in the ordinary course of business, including matters we initiate to defend ourselves or our users by determining the scope, enforceability, and validity of third-party proprietary rights or to establish our proprietary rights. We investigate these claims as they arise and accrue estimates for resolution of legal and other contingencies when losses are probable and estimable. Although the results of litigation and claims cannot be predicted with certainty, we believe there was not at least a reasonable possibility that we had incurred a material loss with respect to such loss contingencies as of October 31, 2019. Additionally, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources, and other factors, regardless of the outcome of such litigation.

On June 6, 2019, a purported securities class action was filed in the U.S. District Court for the Northern District of California naming Box and certain of its officers and directors as defendants (the “Securities Class Action”). The complaint purports to bring suit on behalf of shareholders who purchased or otherwise acquired Box’s securities between November 28, 2018 and June 3, 2019. The complaint purports to allege that defendants made false and misleading statements about Box’s business and prospects in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and seeks unspecified compensatory damages, fees, and costs. We believe the claims are without merit and intend to defend against the lawsuit vigorously.

On October 23, 2019, a shareholder derivative complaint was filed in the Superior Court of California, San Mateo County, purportedly on behalf of Box and naming as defendants certain current and former officers and directors. The complaint purports to allege claims for breach of fiduciary duty and unjust enrichment in connection with the same events alleged in the Securities Class Action and seeks, among other relief, unspecified monetary damages, attorneys’ fees, and costs. Because the litigation is in the early stages, we are unable to estimate a reasonably possible loss or range of loss, if any, that may result from this matter.

We believe these claims are without merit and intend to defend against the lawsuits vigorously.

We include service level commitments to our customers warranting certain levels of uptime reliability and performance and permitting those customers to receive credits in the event that we fail to meet those levels. In addition, our customer contracts often include (i) specific obligations that we maintain the availability of the customer’s data through our service and that we secure customer content against unauthorized access or loss, and (ii) indemnity provisions whereby we indemnify our customers for third-party claims asserted against them that result from our failure to maintain the availability of their content or securing the same from unauthorized access or loss. To date, we have not incurred any material costs as a result of such commitments.

Our arrangements generally include certain provisions for indemnifying customers against liabilities if our products or services infringe a third party’s intellectual property rights. It is not possible to determine the maximum potential amount under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. To date, we have not incurred any material costs as a result of such obligations and have not accrued any material liabilities related to such obligations in the condensed consolidated financial statements. In addition, we indemnify our officers, directors and certain key employees while they are serving in good faith in their respective capacities. To date, there have been no claims under any indemnification provisions.