The European Commission spent Monday night discussing the accord with member states to get the deal over the line before an EU-U.S. summit in Brussels with President Joe Biden, according to EU officials familiar with the deliberations. A formal announcement is expected later Tuesday.

Commission President Ursula von der Leyen confirmed that negotiations “with our American friends” were heading in the right direction. “I’m positive and convinced we’ll deliver today,” von der Leyen told reporters in Brussels, adding it was in the EU and U.S.’s “common interest to solve it.

The accord turns the page on a key conflict in former President Donald Trump’s trade war and sets the stage for a new era of transatlantic cooperation over state aid at a time when China is vying to displace the Boeing-Airbus civil aircraft duopoly. The allies vowed to end a separate dispute over steel and aluminum, in a sign of progress in resetting the relationship under the Biden administration.

Under the Airbus-Boeing deal, all future passenger aircraft will be required to be developed without subsidies, the people said.

The agreement was driven, in part, by a growing awareness among policy makers in Brussels and Washington that China’s state-sponsored aerospace manufacturer Commercial Aircraft Corp. of China, or Comac, is on track to become a legitimate rival in global planemaking by the end of the decade.

Airbus and Boeing declined to comment.

Shares of Airbus, based in Toulouse, France, advanced 1.3% as of 10:40 a.m. in Paris, bringing this year’s gain to 27%. Chicago-based Boeing shares were little changed ahead of regular U.S. trading. They have risen 15% year-to-date.

Long Battle

The feud dates back to 2004, when the U.S. lodged a legal case at the World Trade Organization against the EU over member-state support to Airbus for commercial aircraft development. A parallel case opened by the bloc argued that Boeing benefited from U.S. subsidies as well as space and military contracts, which defrayed the cost of civilian aircraft development.

In 2019, the World Trade Organization authorized the U.S. to level tariffs against $7.5 billion of EU exports annually over government support for Airbus. The EU then won permission to hit back with levies on $4 billion of U.S. goods.

While the dispute escalated during the Trump administration, the levies, which extend beyond aircraft parts to items like tractors, wine and cheese, were suspended by both sides in March as negotiators worked toward an agreement. The U.K. unilaterally suspended its tariffs with the U.S. in December as it broke from the EU.

Airbus has likely reimbursed or moved to commercial rates all launch-related financing that was deemed illegal, and any further adaptations required are likely to be immaterial, said Sandy Morris, an analyst with Jefferies in London.

“I understand why the U.S. might have felt aggrieved in the first place,” Morris said. But he said that it has long looked like there were mutual infractions, and “seeking to bolt the stable door long after the Airbus horse had left was futile.”

Steel, Aluminum

The EU and U.S. will also commit at the summit to remove tariffs related to a steel and aluminum dispute, according to a draft of the meeting’s conclusions. In 2018, the U.S. imposed levies on metals exports from Europe on national-security grounds.

This one is trickier and there has been back-and-forth over the exact language in the drafts of the joint communique, but both sides seem to agree on pushing for a deadline by the end of the year, said the officials, who asked not to be identified because the talks are private.

The EU retaliated against the U.S. steel and aluminum measures by targeting 2.8 billion euros ($3.4 billion) of American imports with tariffs on a range of big-brand products, including Harley-Davidson Inc. motorcycles, Levi Strauss & Co. jeans and bourbon whiskey.

–With assistance from Siddharth Philip and Katharina Rosskopf.