Is there a time limit for COS from H4 to old H1 B petition?

Although there is no time limit, the sooner they do this the better.

My wife is withdrawing her petition for my greencard but I only got a work permit?

No, if the 2 of you didn't already have your interview ... TOGETHER ... you can't get your greencard based on marriage ... unless she...

My wifeiswithdrawing her petition for my greencard but I only got a work permit?

No, if the 2 of you didn't already have your interview ... TOGETHER ... you can't get your greencard based on marriage ... unless she...

How to answer "Do you have a pending I-485, I-765, or I-539 application?" in this case?

We recently moved to a new address 3 days back. A: It is never a good idea to move when things are pending. CIS is notorious for screwing up...

Yes, it does happen that a work permit doesn't arrive before the interview. If you want a 'real' 2nd opinion contact an attorney, pay for a...

How much time it may take to approve the LC if we are on B1/B2? And, what are the chances to get green card in this situation?

This will take several years ... more time than you can request on B-2 extensions. You should consider going home and waiting during the process.

Tourist visa to student visa help?

This will be very expensive, complicated and take a long time. CIS became 'unhappy' with people that entered the US on B-2 visas and then...

First of all it is not 'your' PERM and not 'your' I-140 ... they are the property of the employer that filed and paid for them. It is normal if...

Minimum partnership with a citizen, required for starting business on H1B?

Not only can you not work for the company, you can not be involved in the management, nor decision making. I suspect that you'll have a...

No you can NOT stay during PERM processing. The L-1B will need to be extended.