US President Donald Trump says he was in no rush to complete a trade pact with China and insisted that any deal include protection for intellectual property.

Trump and Chinese President Xi Jinping had been expected to hold a summit at the president's Mar-a-Lago property in Florida later this month.

But no date has been set for a meeting and no in-person talks between their trade teams have been held in more than two weeks.

Speaking to reporters at the White House, the president said he thought there was a good chance a deal would be made, in part because China wanted one after suffering from US tariffs on its goods.

But he acknowledged Xi may be wary of coming to a summit without an agreement in hand after seeing Trump end a separate summit in Vietnam with North Korean leader Kim Jong Un without a peace deal.

"I think President Xi saw that I'm somebody that believes in walking when the deal is not done, and you know there's always a chance it could happen and he probably wouldn't want that," Trump said.

China has not made any public comment confirming Xi is considering going to meet Trump in Florida or elsewhere.

The president, who likes to emphasise his own deal-making abilities, said an agreement to end a months-long trade war could be finished ahead of a presidential meeting or completed in-person with his counterpart.

"We could do it either way. We could have the deal completed and come and sign, or we could get the deal almost completed and negotiate some of the final points. I would prefer that," he said.

Trump decided last month not to increase tariffs on Chinese goods at the beginning of March, giving a nod to the success of negotiations so far.

Trump confirmed that intellectual property protection, a major sticking point between the two sides during months of negotiations, had to be included in a trade deal.

He indicated that from his perspective, a meeting with Xi was still likely.