Spotify Technology SA filed an antitrust complaint against Apple in the European Union in March.
The attorneys general are probing Facebook to determine if it endangered consumer data among others.
Facebook had previously promised to appease all regulators before launching Libra.
The EU’s General Court will hear arguments in the challenges by the iPhone maker and Ireland over two days set for Sept 17-18.
A final report from Australia’s competition watchdog calls for greater antitrust scrutiny of the dominant US tech companies.
EU antitrust regulators say they would open their own investigation into whether Amazon's terms of service and use of merchant data violates competition rules.
The top US antitrust enforcer says that studying enforcement actions against Standard Oil and AT&T decades ago can help look at possible anti-competitive behaviour at Google and Facebook.
Android phone users will have the option of picking alternatives to Google's search app and Chrome web browser.
Google, Facebook Inc. and Apple Inc. tumbles as the companies prepare to undergo US antitrust probes.
The potential investigation represents the latest attack on a tech company by the administration of US President Donald Trump.
Senior executives at both companies say their grand plan never stood a chance because the UK's antitrust regulator was hostile to the deal from the start.
Qualcomm alleges Apple violated three of its patents, and is asking for tens of millions of dollars or more in damages.
Amazon allegedly terminated sellers' accounts abruptly and for no apparent reason.
The companies have offered to sell signalling assets as well as longer licensing agreements, and have already identified potential acquirers.
European Competition Commissioner Margrethe Vestager said last week she was looking into whether the world's largest online retailer was using merchants' data illegally.
Executives at the two companies have been quietly laying plans to create what would be the world’s biggest airline by passenger traffic.
If signed, the order would represent a significant escalation of Trump’s aversion to Google, Facebook, Twitter and other social media companies.
Google said its search function is not used to set a political agenda and isn’t biased against any ideology.
The government faces a challenge in reforming conglomerates in ways that could be painful for the sprawling business groups because it must rely on them to promote economic growth.
Investors have been optimistic for the most part that the deal would be pushed over the finishing line nonetheless.
Philips, Asus, Pioneer, and Denon & Marantz were fined for imposing fixed or minimum online prices for their products.
EU officials on Wednesday also ordered Google to stop using its popular Android mobile operating system to block its rivals, adding to trade tensions between Washington and Brussels.
The penalty is nearly double the previous record of 2.4 billion euros which the US tech company was ordered to pay last year over its online shopping search service.
German company Linde and US rival Praxair announced their merger plan in June last year, with the aim of ousting French competitor Air Liquide as global leader in gas distribution.
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