One can file two I-485 and read below and no lawyer says it is FRAUD as posted by tammy2 and TheRealCanadian it can be wastage of filing fees for filing second I-485 and everybody has diffrent reasons
http://www.americanlaw.com/q&a129.html
Q:Currently my wife and I are waiting for the approval for the concurrent I-140 and I-485 application based on my wife's employment with her employer. I just received recently the labor certificate, sponsored by my employer. Now my lawyer insists that my wife and I can apply again for the I-140 and I-485 based on my employment without jeopardizing our pending case. My wife's lawyer, on the other hand, insists that it is going to cause confusion about our I-485 applications and suggests that I can only ask the company to apply for the I-140 right now. Who is right, my lawyer or my wife's lawyer?
A:Technically, I don't think there is anything to prevent you from filing two adjustment of status applications but I don't think you necessarily want to do so. I agree that it might be confusing for the same alien to file two concurrent applications for adjustment of status. In addition, there is no point in paying hefty I-485 filing fees a second time. One adjustment of status application has already been filed, which will almost certainly be adjudicated faster than any subsequently filed application.
One thing you might want to do is file your own I-140 without the second I-485 and, once you have a receipt notice for the I-140, write to the Service Center (using the receipt numbers for each of the original I-485 applications filed by you and your wife) and tell them that there is a second petition that provides an additional basis for the adjustment of status applications. Give the receipt number for your immigrant petition filing so they will be aware of it.
This does not mean that it is necessarily wrong to file a second Form I-485; I don't believe there is any regulation that prohibits it. I would not recommend it for my clients, for the above reasons, but another attorney might disagree with me.
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This is also from from a lawyer site:
Q:I would really appreciate it if you could shed some light on my question. Once in your answer to Wednesday's question, you said there is no INS regulation regarding concurrent I-485 applications, such as that a couple can file two I-485 applications based on two different I-140; several weeks ago, you mentioned that INS prohibits concurrent I-485 applications. Can you please clarify it some more? What is INS policy on it? Will they deny it?
A: While INS frowns on concurrent I-485 applications due to the potential backlogs and possible issuance of more than one visa number per applicant, filing two I-485 applications is not expressly prohibited. There are, however, several related policies.
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This is from Murthy Chat
Chat User : Is it possible to submit a concurrent I-140/I-485 filing when another concurrent filing is pending? That is, can there be two simultaneous I-485 filings?
Attorney Murthy : The USCIS will not need a person to file another concurrent I-485 with the second case. A person may use the latest I-140 filing and submit it with the pending I-485 case so that it is interfiled. By filing a second I-485, it will likely delay both cases, since there could be some confusion. Also, it is more likely to result in the USCIS' scheduling an interview for such a person.
Question : I have two pending I-140 petitions. Can I file I-485 concurrently on both petitions? What if one petition is accepted and the other is denied?
Answer : Generally, a person does not file two I-485s at the same time. It is a waste of money and makes the file look suspiciously thick! In most NIW or EA cases, it may make sense to wait for the INS" decision on the I-140. Or file the AOS on one case and maybe a CP on the other case.
Date : 2002-11-04
Question : Can a person have two I-485s from two different service centers? Is I-485 filing based on an employee"s residence location?
Answer : Generally, the INS prefers that a person file the I-485 where the I-140 petition was approved. It is not advisable to file two I-485s in two locations for the same job and same I-140 approval notice.
Date : 2002-10-07
Question : Good evening! My husband filed I-485 last year and I am the derivative. His case is pending now. Can I file my own I-485 with my husband as the derivative while we are waiting for the approval of his case?
Answer : Better than doing that and confusing the INS with two I-485s with each of your names, you could proceed with CP and leave the other case as AOS. Then the INS is likely to move on one and the consulate may move faster on the other and you both will really possibly have 2 good options to work with.
Date : 2002-05-20
INS on Substituting New Petition Approval in Pending I-485
http://www.murthy.com/UDpen485.html