Katherine E.Perrelli


Clients rely on Kate to help them navigate complex commercial disputes, protect their trade secrets, confidential and proprietary information—and to swoop in to litigate these issues with her team on a moment’s notice.

More About Kate

Clients turn to Kate when they are most concerned about losing their confidential proprietary information and trade secrets or when other companies have hit them with a shot across the bow alleging violations of common and statutory laws for hiring a new employee or group of employees.  Kate is a nationally recognized authority in trade secret and unfair competition law and companies rely on her experience to counsel them in protecting their business assets both before and after a dispute arises. Not only is she a problem-solver, she is also a trusted business advisor and collaborative partner, learning her clients' business so that she can help formulate and mold their policies and practices for protecting trade secrets and confidential information, and recommend and employ winning strategies in litigation involving these issues.

Kate is her clients’ first call when they face challenges with unfair competition, trade secret misappropriation, and other intellectual property theft, restrictive covenant litigation, complex commercial disputes, wrongful termination, and internal workplace misconduct and compliance complaints. In addition to representing her clients across the country on such matters in federal and state courts, arbitrations and mediations, she is also frequently retained to conduct complex investigations concerning executives, internal workplace misconduct and other internal complaints. Her services also include preparation of individual and multistate employer noncompete, nonsolicit, nondisclosure and other restrictive covenant agreements; advice regarding onboarding of employees or groups of employees from a competitor, or departing employees joining a competitor; and preparation and implementation of trade secret protection programs, including trade secret audits.

Kate is currently a member of the firm's executive committee, the co-chair of the firm’s national Trade Secrets, Computer Fraud & Non-Competes group, and she is the chair of the ABA Committee on Trade Secrets and Interference with Contracts. Kate is the immediate past national chair of Seyfarth’ s Litigation department, has led a variety of litigation and business counseling practice areas, and she has collaborated with other firm non-litigation departments on client and industry initiatives. These various Seyfarth and industry leadership roles enhance her client service by giving her up to the minute access to emerging legal trends, best-practices and benchmarking information, as well as a deep knowledge of firm and industry talent that can be tapped for specialized client needs.

Kate has also studied and employed the most innovative techniques in  the legal industry, including value-based pricing, process improvement, and project management and service delivery that affect the business side of many in-house legal departments.

Kate also has considerable experience in devising and managing alternative, value-based fee structures. She is a certified Six Sigma Green Belt and applies Lean Six Sigma and SeyfarthLean principles to her practice, counseling clients on process improvements, data analytics, and project management.

  • JD, Western New England University School of Law

    Western New England Law Review

  • BA, Skidmore College
  • Connecticut
  • Massachusetts
  • New York
  • US Court of Appeals, First Circuit
  • US Court of Appeals, Second Circuit
  • US District Court, District of Connecticut
  • US District Court, District of Massachusetts
  • US District Court, Eastern District of New York
  • US District Court, Southern District of New York