some doubts regarding h1b stamping

Hi,

Currently my petition for H1b is in a RFE review.

i do have a german valid workpermit currently in my passport.

whether this workpermit will be having any problem while going for H1b interview.?

My passort will expire oct 2015. if i get stamped in my passport / can i apply for a new passport before going to US?

Please do reply ?

Thanks & Regards

praveen

Any update on my query above

regards

praven