Might had/have? Just wondering whether "might had" is correct form of grammar or not.?

What you know is the correct form ... is correct: "might have had". 'might had' is not correct by English rules of conjugating verbs.

'can', 'could', 'may', 'might', 'shall', 'should', 'will', 'would', and more ... these are all called the 'modal verbs'. You can google that term. They are a special class of verbs. After the modals, including 'might', THE INFINITIVE is always required.

Here's the part that is not taught much: There are actually two infinitives to the English verb. One is the 'regular infinitive' and is used for present and future ideas -- it's the one you find in the dictionary, like '(to) love' or '(to) bring'. ('I love to eat apples. I will bring apples to you tomorrow.') The SECOND infinitive is called the perfect infinitive. It is two words: 'have' and then the past participle form of the verb: 'to have loved' or 'to have brought' for example. (Think of 'to have...' as the start of a perfective infinitive -- and the word 'have' will never be 'has' or 'had' -- it will always be 'have' -- which is an infinitive itself, and always followed by the main verb past participle form.) That is why 'might had' doesn't work in English grammar.. Here is the site that explains the perfect infinitive better than I can in a few words: http://www.englishgrammar.org/perfect-infinitives/ You can google 'perfect infinitive' for more explanations at other sites.

"Might had" is wrong

"Might have" is correct as in - I might have called a taxi if I knew it was raining

Might and had is also correct -as in - I might have had a nice time if we had gone to the club.

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Kate uk

"Might had"? Never correct, ever.

You might here something like "I mighta had time...", but "mighta" would be a shortened, spoken form of might+have ("might have had" being the full phrase).