FAQ: Is interview required for compelling circumstances EAD? || Can we open a company while on EAD? What kind of questions/documents will be needed in the I-185 AOS interview? || Does H-1B extension denial invalidate an existing H-1B? || What can be done if an H-1B is denied while in the USA? ||Impact of taking a long break while on H-1B.
Other: Traveling while an H-1B is pending || Impact on naturalization of an incorrect name in the past ||Working from home on and H-1B ||Name updated on form I-140||Applying for L-2 EAD and change of status to H-1B ||Erroneous name on passport, visiting on a tourist visa ||Applying for H-4 EAD, I 140 withdrawn before 2017 ||H-1B issued without an I 94||I 485 delay, etc.
This entry is now old law. The new law is at http://www.immigration.com/blogs/i-140-ead-regulations-effective-17-jan…
5 November 2015: After some flip flops, USCIS has gone back to allowing carry forward of priority dates even if I-140 is revoked by employer - as described in this discussion. So, we are good for now.