My wife has infertility due to endometriosis. I have incurred considerable medical expenses to treat that condition and for the IVF treatment. Can I sue my inlaws for it, to recover the expenses and emotional stress endured due to this?
There is no provision in law for suing your in laws for this deficiency in your wife.
She is not a product that the owner or producer can be sued for deficient product.
Endometriosis is more common in women who are experiencing infertility than in fertile women, but the condition does not necessarily cause infertility.
Treatment of endometriosis includes medication and surgery for both pain relief and treatment of infertility if pregnancy is desired.
Thus this defect cannot be treated as suppression of fact material to marriage hence you cannot even file an annulment petition to annul your marriage.