The phrase "after weeks of criticizing" is correct and usable in written English.
It can be used to indicate a period of time spent expressing disapproval or negative feedback about something or someone before a subsequent action or event.
Example: "After weeks of criticizing the new policy, the committee finally decided to propose an alternative solution."
Alternatives: "following weeks of criticism" or "after several weeks of disapproval".
After weeks of criticizing G.M. publicly, and even canceling talks temporarily over a perceived slight to striking workers by a G.M. negotiator, Mr. Jewell refrained from attacking the company today.
Moreover, after weeks of criticizing Mr. Paterson — one Senate Democrat even made a disparaging reference to the governor's admissions of past drug use and extramarital relationships — leaders of both factions seemed to make a point of thanking him.
The Congressional Republican leaders, Senator Mitch McConnell of Kentucky and Representative John A. Boehner of Ohio, after weeks of criticizing the idea as a door to tax increases, signaled in separate statements that they would participate in forming the commission without setting preconditions.
Milwaukee sheriff David Clarke and former New York mayor Rudy Giuliani will speak after a week of criticizing the Black Lives Matter movement: the latter called it "anti-American" and the former a "hate group".
Mr. Kushner's company and the firm, Anbang Insurance Group, agreed to end the talks on Wednesday after weeks of negative publicity about the deal, criticized as a bailout of the Kushners.
B1 Candidate Criticizes Giuliani The Republican mayoral candidate Michael R. Bloomberg, after weeks of offering little but praise for Mayor Rudolph W. Giuliani, criticized Mr. Giuliani as being wrong in 1995 when he ousted Yasir Arafat from a concert for world leaders.
That reality led Clinton to once again begin directly criticizing her Democratic rival after weeks of trying to ignore him in favor of campaigning against Donald Trump, the Republican front-runner.
Mr. Chávez's comments came on the same day that senior Bush administration officials, who have been relatively silent after weeks of constant verbal volleys by the Venezuelan leader, harshly criticized his governing style.
It would be a major turnaround after weeks of failure for the oil giant, which had been harshly criticized as being unprepared for such a disaster.
WASHINGTON, Oct. 18 - After weeks of facing attacks that his campaign and outside commentators called distortions, Senator John Kerry has begun criticizing President Bush on Social Security and the draft in a manner that reaches far beyond Mr. Bush's positions.
Aides to the governor were angry when the attorney general publicly criticized the budget deal struck by Mr. Paterson and the Legislature in April after weeks of negotiation.
