Confidential information acquired on Wednesday from court information showed that Facebook Inc. got to the conclusion that the $15 billion market value representing the investment made by Microsoft Corporation in 2007 wasn’t worth.

The June court hearing transcript which was sealed off to the public disclosed the fact that the lawyers had argued over a legal settlement concerning that fact that Facebook had priced its held stock at $8.88 per share, reaching a market value of $3.7 billion.

Facebook, which manages the largest social network on the Internet, made this evaluation after it had run into the October 2007 deal with Redmond, Washington-based Microsoft. As a part of the larger partnership with Microsoft, Facebook came to an agreement with the company as to sell a 1.6% of the software maker for $240 million.

But this meant that Facebook’s stock was worth $35.90 when the deal with Microsoft was made. And this was a strong point in the settlement of a lawsuit which had accused Mark Zuckerberg, the founder of the company, of stealing this idea from another three former class mates which had developed another social network called ConnectU.

Yet, neither Barry Schintt, the spokesman for Facebook, nor Microsoft could be reached for further comments on this issue. Nevertheless, analysts believe that Facebook produced almost $300 million in revenue last year and the lawyers opposing the company stated the $35.90 per figure appeared in the negotiations papers.

Divya Narendra and twins Tyler and Cameron Winklevoss, former classmates of Zuckerberg, hesitated from settling this case last March after they had found out Facebook established that its stock was worth one-fourth of the value obtained from the investment made by Microsoft.

In the end, Facebook agreed to pay $20 million to ConnectU together with 1,253,326 shares from its common stock. This stock was worth $45 million, considering the evaluation made by Microsoft.