From the user agreement: If you wish to open a Dispute through PayPal's Online Resolution Center, you must do so within 45 Days of making your payment or initiating your transaction in the case of Pay After Delivery; or if you use the PayPal Grace Period payment feature, you must open your Dispute within 60 Days of receiving your email transaction statement. Having said that, normally you ship after the funds have been deposited into your PayPal accout. Should you decide to wait out the dispute period before you ship, you will create a new set of issues.
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