Sisun Law

About Sisun Law

Sisun Law is an intellectual property and business law firm based on Madison Avenue in New York City. The practice is led by Scott Sisun, a former USPTO trademark examiner, and focuses on helping clients protect, manage, and monetize intellectual property. Its core service areas include trademark, copyright, patent, and business and start-up law, with additional attention to branding, advertising, technology, domain names, social media, fashion, design, licensing, and enforcement.

The firm’s trademark work covers applications, filings, registration and prosecution, portfolio management, clearance, maintenance, infringement, litigation, TTAB proceedings, UDRP disputes, and brand protection strategy. Copyright services include registration, litigation, licensing, enforcement, DMCA matters, content clearance, work-for-hire issues, fashion law, design rights, and new media. Patent and design patent services include registration, analysis, PTAB matters, litigation, enforcement, defense, licensing, and portfolio management; the website notes that patent services are provided through a network of experienced patent prosecution and litigation attorneys. Business and start-up services include entity formation, day-to-day counsel, start-up agreements, commercial transactions, litigation, licensing, merchandising agreements, negotiation, and contract drafting and structuring.

Sisun Law serves clients of varying sizes, from small businesses and start-ups to established companies, and describes its approach as personalized to each client’s needs and budget. Client examples include Aviva Winter, Iron Oaks, and Yogiiza. Across the firm’s reviews, common praise centers on Scott Sisun’s trademark expertise, clear explanations, thorough preparation, responsiveness, and ability to guide clients through complex or unfamiliar IP processes. Reviewers frequently mention feeling supported during first-time trademark filings, receiving strategic advice beyond basic filing, and appreciating transparent communication about steps and costs. Several reviews highlight the firm’s work with start-ups navigating privacy, trademark, and business formation issues, while others describe long-term relationships involving portfolio management and dispute resolution.

The overall tone of feedback is highly positive, with clients describing the experience as professional, patient, and detail-oriented. The firm appears especially well suited to entrepreneurs and business owners seeking strategic IP counsel, trademark registration, and enforcement support. A notable limitation is that patent prosecution and litigation are handled through an external network rather than solely in-house. Additionally, one review references real estate closing services, which falls outside the intellectual property and business law focus reflected on the firm’s website and in most client feedback.