The United States withdrew from the agreement in 2018.
"Competition, as you know, does define our relationship with China, but we do have, in some cases, rather narrow areas of tactical alignment", State Department spokesman Ned Price told reporters.
USA officials will also be in Vienna for consultations but so far are not expected to be part of the larger meeting.
Washington (CNN)The members of the Iran nuclear deal and the United States will visit Vienna next week in the first effort to kickstart face-to-face negotiations to salvage the pact since the Biden administration came into office, a senior administration official said.More news: Mass. officials not told to expect delays in shipping Johnson & Johnson vaccine
The commission will meet relevant experts to "to clearly identify sanctions lifting and nuclear implementation measures".
Iranian state television quoted Abbas Araghchi, Iran's nuclear negotiator at the virtual meeting, as saying during the meeting that any "return by the U.S. to the nuclear deal does not require any negotiation and the path is quite clear".
While U.S. officials will be present in Vienna, Iran as yet seems unwilling to engage directly with Washington. The impression is that we are on the right track but the way ahead will not be easy and will require intensive efforts.
The Iranians have called for the U.S.to lift economic sanctions, which were reimposed by former President Donald Trump after he unilaterally quit the nuclear deal in May 2018.More news: Ontario premier: 'Don't make plans for Easter'
The online meeting will be chaired by the deputy secretary general and political director of the European External Action Service (EEAS) Enrique Mora on behalf of EU High Representative Josep Borrell.
China, France, Germany, Russia and the United Kingdom signed the original agreement with Iran and the U.S.
The U.S. and Iran have been in a standoff over reviving the nuclear deal.
But Biden has promised to rejoin the agreement on condition Tehran first returns to respecting the commitments abandoned in retaliation for Trump's decision.More news: Biden's dog bites another White House employee