The other signatories have been scrambling to save the accord, arguing it offers the best way to stop Iran developing a nuclear bomb.
"Instead of building this factory in the next seven or eight years, we built it during the negotiations but did not start it", Salehi said, according to Reuters.
Iran on July 17 filed a lawsuit against the U.S. at the International Court of Justice (ICJ) over the reimposition of heavy sanctions against Tehran by the Trump administration, claiming the move violates the little-known Treaty of Amity, Economic Relations and Consular Rights, signed as far back as 1955 by the two countries.
Iran's nuclear chief said Wednesday Tehran has built an advanced factory to make centrifuge rotors that enhance uranium enrichment capacity.
Meanwhile, IRGC-linked Tasnim news agency carried the WSJ report on its website on July 17, adding that "US officials have repeatedly said that European companies and people could be targeted if they continue doing business in Iran once USA sanctions fully snap back in November".
The agreement, negotiated between Iran and world powers, placed strict limits on Tehran's nuclear program in return for elimination of economic sanctions.
However, since the USA pulled out of the deal in May, Iran has vowed to boost enrichment capacity to put pressure on the remaining signatories to live up to the agreement.
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The move is the first concrete sign that Europe could deliver on its promise to take steps to sustain the Iranian nuclear deal, setting European governments squarely against the Trump administration's Iran sanctions policy aimed at isolating Tehran economically.
The European Investment Bank (EIB) would put at risk its model business if it were active in Iran, the organization's president Werner Hoyer said. Trump reported on the restoration of all sanctions against Iran, including secondary ones, that is, against other countries that conduct business with Iran.
This is arguably one of the most salient examples of persistent Iranian misbehavior, which may underscore the additional risks of violating United States sanctions for the sake of maintaining the status quo in European-Iranian relations.
A State Department official said the application was without merit and the United States would fight it in the court.
The ICJ, which is based in The Hague and is also known as the World Court, is the United Nations tribunal for resolving global disputes. But the latest reporting gives little indication of how seriously either case is likely to be taken.
A USA embassy spokesman confirmed that the talks would take place on Friday and would focus on Iran sanctions. Iran has demanded financial concessions from Europe to compensate for losses caused by Washington's renewed sanctions.
Mr. Singh also clarified that India's ties with Iran will not be subjected to restrictions imposed by a third country.