Holding that interest of police officers in having equal access to a promotion system was sufficient to justify intervention as of right by officers' associations and unions to contest entry of a consent decree in an employment discrimination case against the City of Houston requiring a series of remedial promotions for members of certain minority groups
Holding that timber industry representatives were not adequately represented by the government because "[t]he government must represent the broad public interest, not just the economic concerns of the timber industry"
Holding that the court had jurisdiction to review the denial of permissive intervention where the plaintiffs requested intervention based on right and permission
Holding that appeal of the joinder of two defendants was inextricably intertwined with appeal of an injunction prohibiting suit against the defendants in another jurisdiction because the latter appeal involved factors pertinent to the former
Finding no prejudice under this element because potential intervenor filed motion approximately one month after it became aware of stake, which was before trial and final judgment
Concluding that "it would not be demonstrably more efficient to stay" first-filed suits in favor of a manufacturer's later-filed suit when the patent-owner argued that the manufacturer was "not the only source of the software used in the phones alleged to infringe"