"have now submitted" is correct and usable in written English.
You can use it when you want to indicate that an action was recently taken or that a process has been completed. For example, "We have now submitted all of the paperwork for the project."
However, we have now submitted our response to this claim and will defend ourselves vigorously.
More than 150 countries have now submitted plans on limiting their greenhouse gas emissions beyond 2020, when current commitments expire.
Leicester have now submitted some financial information, but league sources say that too is not yet complete.
They have now submitted friend-of-the-court briefs in order to inform the court of other interests that may be affected by its decision.
For those of you that are counting, the FCC says more than 1 million people have now submitted comments on net neutrality.
Importantly, while the land we bought in 2009 was on the site of the proposed runway, and therefore represented a legal block, the airport's owners have now submitted a proposal to build the third runway in a different place, away from our plot.
Mr. Reid has now submitted several components of the developing Senate health care bill to the Congressional Budget Office for cost analysis.
The former Porto, Barcelona and Chelsea player has protested his innocence, claiming the positive test is the result of a contaminated vitamin supplement, and has now submitted an appeal to the CAS.
One of her allies has now submitted a formal complaint that local Labour members have been sent flyers on the basis of data that was "illegally procured and used by an external organisation and/or unauthorised people without consent".
The club, he said, "welcomes the new rules" and has now "submitted the relevant documentation regarding the proposed new directors and will continue to have dialogue with the league to ensure a smooth transition".
