Saudi officials were not immediately available to comment. They have previously said that the country is taking action to combat piracy and is committed to protecting intellectual property rights.
WTO Director-General Roberto Azevedo warned that a full-blown trade war "would knock around 17% off global trade growth, and 1.9% off GDP growth."
China alleged that the US, in violation of WTO rules, was continuing the practice of zeroing, which calculates the price of imports compared to the normal value in the US to determine predatory pricing.
A Canadian government source reports a small group of like-minded trade ministers will gather in Ottawa October 24-25 to discuss WTO reform.
With US President Donald Trump readying tariffs on another US$200 billion in Chinese goods, the ministers said they were "stepping up the dialogue" on international trade disputes.
The request for authorisation from the WTO to introduce the sanctions is likely to lead to years of legal wrangling over the case for the penalty and the amount.
Trump agreed in July to refrain from imposing car tariffs while the two sides sought to cut other trade barriers, in a move described then by the European Commission chief as a major concession.
The government will present a draft bill in coming weeks to prepare measures such as facilitating the presence of British citizens already living in France.
The latest US filing said Indonesia had not complied with the ruling against its own import restrictions, so Washington was seeking annual sanctions to compensate for the damage done to US interests.
The ministers say they had affirmed their commitment not to adopt "unnecessary obstacles" to trade, and affirmed their rights and obligations under WTO agreements.
China and the United States are engaged in a trade war and envoys from the two nations clashed at the WTO on Thursday.
Until now the EU has represented Britain at the WTO, and Britain's membership rights were not set out distinctly, even though Britain was always a WTO member in its own right.
The US claimed that British Columbia's regulations exclude all imported wine from grocery store shelves and violated WTO rules on non-discrimination.
The credibility and survival of the World Trade Organization (WTO) is under "serious threat" as major economies put up protectionist barriers.
US Trade Representative Robert Lighthizer said in a statement that the retaliatory tariffs on up to a combined US$28.5 billion worth of US exports are illegal under WTO rules.
China's commerce ministry said it was "shocked" by the latest US trade action and would complain to the World Trade Organisation, but did not immediately say how it would retaliate.
China said on Wednesday that the latest proposed tariffs from the US harms the World Trade Organization system and hurts globalization.
Axios news agency reported earlier in the day that Trump had repeatedly told top White House officials he wants to exit the WTO, citing people familiar with Trump’s thinking.
Trump has repeatedly told top White House officials he wants to withdraw from the trade organization, which he said isn’t always fair to the US, Axios reported, citing unidentified administration sources.
The note, prepared for EU governments ahead of a June 28-29 summit where trade will be discussed, reflects the growing strains between traditional allies.
The United States on Wednesday rejected as "baseless" China's retaliatory tariffs and complaint in the World Trade Organization over the US tariffs recently imposed on steel and aluminum imports.
US President Donald Trump has launched a series of tariff-raising moves, upsetting allies and rivals alike.
USTR had filed a request for consultations with China at the WTO to address "discriminatory technology licensing agreements".
The move comes after a WTO ruling last month that obliged Beijing to lower the tariffs unless it appealed within 20 days.