[verb て-form] + いただけませんか
Even more polite variant:
The structure ~ていただけませんか is a very polite way to make a request, equivalent to "Could you please …?" in English. It is formed by attaching いただけませんか to the て-form of a verb.
The verb いただく is the humble form of もらう (to receive), and the negative question form 〜~ませんか softens the request further. Together, the literal meaning is something like "Could I not receive the favor of you doing …?" – which in practice functions as a very respectful request.
This form is appropriate when speaking to superiors, strangers, customers, or anyone you wish to show a high degree of respect. It is commonly heard in business settings, customer service, and formal conversations.
Japanese has several levels of politeness for making requests. From least to most polite:
Be careful not to confuse いただけませんか (potential form – "could I receive?") with いただきませんか (non-potential – "won't you give me?"). The potential form いただけませんか is the standard and natural way to make this type of polite request.