It may have nothing to do with revealing confidential information, as such, or intellectual property. The Research Organisation should respect its Client's wishes. Okay, let's now look at the default situation. The Research Organisation, and the members of its staff, should not make any public announcement concerning the project without the prior written consent of the Client. Some agreements contain a procedure for the Research Organisation to submit a proposed disclosure to the Client for approval.
Some agreements impose a moratorium on all publications for, say, two years.
In other words, there is no procedure for obtaining the Client's consent. No publication will be tolerated for a specific period. End of story. This is to allow the Client to use the research and development before it is published. A moratorium also gives the Client an opportunity to fully patent any intellectual property derived from the project.