Director James Comey said the agency paid more to get into the iPhone of one of the San Bernardino shooters than he will make in the remaining seven years at his his job.
The lawsuit argues that the government is violating the U.S. Constitution by preventing Microsoft from notifying thousands of customers about government requests for their emails and other documents.
The merger would have allowed New York-based Pfizer to cut its tax bill by an estimated $1 billion annually by domiciling in Ireland, where tax rates are lower.
Under the U.S. vulnerabilities equities process, the government is supposed to err in favor of disclosing security issues so companies can devise fixes to protect data.
Implemented last year, the measure had increased the tax for on-island companies with more than $2.75 billion in revenues that buy goods from off-island 'related parties' to 6.5 percent from 2 percent.
The abrupt end to a confrontation that had transfixed the tech industry was a victory for Apple, which vehemently opposed a court order to unlock the device used by the San Bernardino shooter.
The government had insisted until Monday that it had no way to access the phone used by one of the killers in the December massacre in San Bernardino, Calif.
More than a year ago, Staples offered to buy Office Depot in a transaction then valued at about $5.5 billion, pressured by declining sales in the office supplies sector and the rise of rivals.
The rare display of unity and support from Apple's sometime-rivals showed the breadth of Silicon Valley's opposition to the government's anti-encryption effort, a position endorsed by the United Nations human rights chief.
In a copy of the brief provided by the company, Apple argued that the government's request is 'unprecedented' and violates the company's First Amendment rights.