A cabinet statement said Zaki took the step out of respect for the Egyptian judiciary and to spare the government any embarrassment over what she called a personal legal matter.
The statement added that she would pursue all legal avenues available to her under Egyptian law, including a petition for reconsideration of the judgment.
Exercising legal rights, she stressed, does not conflict with respecting the court's decision.
According to the statement, Madbouly accepted the resignation, thanking Zaki for her service and wishing her success in her future career.
Earlier that day, the Court of Cassation had rejected two appeals filed by Zaki, upholding a previous ruling by the Economic Court and bringing the long-running case—widely known in local media as the "book plagiarism case"—to a final conclusion.
The dispute began when Abdel-Hamid sued Zaki, accusing her of reproducing portions of Abdel-Hamid's 2022 book in a later publication without authorization.
The final ruling orders Zaki to pay EGP 100,000 in compensation and upholds an earlier order withdrawing the disputed book from circulation and barring its sale or distribution.
A three-member committee of intellectual property experts, the court noted, had found extensive verbatim passages and lengthy quotations that blurred the distinction between the two works and infringed on the originality of Abdel-Hamid's book.
Zaki had filed two identical appeals in September 2025, arguing that the material fell within the bounds of permissible quotation under copyright law.
The Court of Cassation instead upheld the recommendation of the Public Prosecution and rejected both appeals.
Following the ruling, Zaki's lawyer, Alaa Abed, said the case was civil in nature, centring on compensation and related claims arising from what he called a technically complex intellectual property issue.
The boundaries between lawful quotation and copyright infringement, he said, are matters that can be subject to differing expert opinions and legal interpretation.
While reiterating his respect for the judiciary, Abed confirmed that Zaki would file a petition for reconsideration once the court publishes its reasoning, noting that both the constitution and the law guarantee litigants the right to pursue all available legal remedies.
A separate defamation complaint filed by Zaki against Abdel-Hamid was previously dismissed by the courts.
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