The phrase "alleged material" is correct and usable in written English.
It can be used in legal or formal contexts to refer to material that is claimed or asserted to be true but has not yet been proven.
Example: "The court examined the alleged material presented by the prosecution to determine its relevance to the case."
Alternatives: "purported material" or "claimed material".
Mexico has captured the alleged "material author" of the forced disappearances of the 43 students from Ayotzinapa, Gildardo Lopez Astudillo, officials said.
Chino Hills residents are upset about the alleged businesses and started a group called Not in Chino Hills, which has posted the addresses of about a dozen other alleged material hotels in the San Gabriel Valley.
A panel of five supreme court justices, led by president Lord Neuberger, will hear that the legal challenge is brought on the grounds of alleged "material non-disclosure" by the foreign secretary relating to a 2002 feasibility study into the resettlement of former inhabitants.
A new report alleges material found in the batteries of popular tech gadgets may stem from child labor.
Televisa is unhappy with the arrangement, and at the beginning of February it alleged a material breach of their contract by Univision.
The Adelphia Communications Corporation agreed to pay $8.1 million to settle more than $1 billion in claims by entertainment companies that alleged their material was used without permission.
Whatever familiarity I have with his alleged source material rarely helps me to understand or appreciate his idiosyncratic uses of his sources.
The report alleges the material was sent to women who were not their partners, but it is unclear when the photos were sent.
Wolcott also alleges that material was excluded on humanitarian grounds, to avoid causing "additional hurt", though chivalry is on scant display in the book itself, more or less restricted to a 1995 New Yorker piece about Kingsley Amis – written before his death but printed the day after – in which he defends him against the "granny bashing" committed by English interviewers and critics.
The most interesting evidence that the lawsuit alleges as material to its claim of fraud is that Microsoft indicated that fiscal fourth-quarter revenue would be "similar to [the fiscal third quarter] … [and will] continue to reflect sales of Surface".
Amgen contended that before the plaintiffs could have their class approved, they had to prove that the alleged misrepresentations were material in affecting the stock price.
