—In an action to recover damages for legal malpractice, the defendants appeal, as limited by their brief, from so much of an order of the Supreme Court, Suffolk County (Doyle, J.), dated December 2, 1998, as denied their cross motion for summary judgment dismissing the complaint.
Ordered that the order is affirmed insofar as appealed from, with costs.
An attorney may be liable for malpractice where there is proof that he or she failed to exercise the skill commonly exercised by an ordinary member of the legal community, and that but for such negligence, the plaintiff would have prevailed in the underlying action (see, McCoy v Tepper,
The defendants failed to sustain their burden of demonstrating that the plaintiff is unable to prove one of the essential elements of a malpractice claim. “An attorney may be liable for his ignorance of the rules of practice, for his failure to comply with conditions precedent to suit, for his neglect to prosecute or defend an action, or for his failure to conduct adequate legal research” (McCoy v Tepper, supra, at 593). The plaintiff claims that the defendants did not perform adequate legal research, which resulted in their failure to raise the issue of whether a deed involved in the underlying litigation was intended to operate as a mortgage rather than as an absolute conveyance of the plaintiff’s interest in the subject property (see, Real Property Law § 320; Gioia v Gioia,
