English to Chinese Law/Patents Patents

However, in the case of multiple related provisionals, the filing date of the earliest-filed provisional is not lost if, within one year of its filing, a utility patent application is filed that claims priority to each of the earlier-filed provisionals.
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The Patent Office also can object to certain informalities of the filed papers and require correction within a specified time or lose the filing date.

请教，在这里filing date... is not lost/lose the filling date 翻译成什么才好？