Lawyers on both sides of a shareholder lawsuit over Yahoo Inc.'s board's handling of Microsoft's $47.5 billion takeover offer are accusing one another of turning it into a public relations battle.

A Delaware judge weighing the shareholders' request to make their complaint against the company public held a private phone conference with lawyers for Sunnyvale, Calif.-based Yahoo and dissident shareholders Tuesday morning.

Plaintiffs' attorney Joel Friedlander wrote in a letter to Chancellor William Chandler III last week that Internet pioneer Yahoo is trying to "whitewash embarrassing documents" it believes will damage the board's efforts to repel a proxy fight by activist investor Carl Icahn.

The two sides will submit additional arguments this week and next, and the judge will rule after that, Friedlander said Tuesday.

Much of the information the defendants want to keep secret, according to Friedlander, involves employee severance plans that Yahoo adopted shortly after software maker Microsoft Corp. made its initial bid on Jan. 31.

Adoption of the severance plans was an "unreasonable defensive measure" that breached the board's fiduciary duty to maximize value for Yahoo shareholders, the plaintiffs claim.

Icahn has nominated an alternate slate of candidates to oppose Yahoo's 10 current directors, including Chief Executive Jerry Yang, at Yahoo's July 3 annual meeting.

In another letter sent to Chandler just prior to Tuesday's teleconference, Friedlander said Yahoo is ignoring constitutional and common-law standards for the sealing of public judicial records. The company has offered no factual justification for redacting 24 paragraphs of the complaint, portions of 12 other paragraphs, and all six exhibits, he added. Continued...