US Patent Attorney - Sr. Patent Counsel, Program Strategy & Litigation

argenx US; Boston (MA); On-site; USD 200,000 - 260,000; Full time

Job summary

argenx US is seeking an experienced US patent attorney with recent BPCIA and ANDA litigation experience to shape and support our expanding pipeline. You will lead patent strategy, portfolio development, and disputes, collaborating closely with the LCIP team.

In this Boston-based role you will translate complex science into actionable IP decisions, oversee external counsel, and ensure readiness for biosimilar and related disputes across jurisdictions, while helping grow the IP function in a

Job description

Join us as we transform immunology and deliver medicines that help autoimmune patients get their lives back. argenx is preparing for multi-dimensional expansion to reach more patients through a rich pipeline of differentiated assets, led by VYVGART, our first-in-class neonatal Fc receptor blocker approved for the treatment of gMG, and with the potential to treat patients across dozens of severe autoimmune diseases.

We are building a new kind of biotech company, one that maintains its roots as a science-based start-up and pushes our commitment to innovate across all corners of our business. We strive to inspire and grow our company, our partnerships, our science, and our people, because when we do, we deliver more for patients.

In this role you will help protect innovations that can improve the lives of patients with severe autoimmune diseases, while building intellectual property (IP) litigation and contested-matter strategy. We are seeking an experienced US patent attorney who combines recent and substantial BPCIA and/or ANDA patent litigation expertise, scientific curiosity and commercial judgment with an appetite to shape and support our pipeline and improve how a modern IP team works.

Litigation, contested matters and dispute readiness will be your primary focus, but you will also partner with the broader IP team to bring a litigation perspective to patent portfolio building and act as lead attorney for a focused portfolio of preclinical and clinical projects and programs. Program allocation will preserve capacity to lead disputes and will be reviewed with the Global Head of IP as contested-matter demands evolve.

You will work closely with colleagues across the Legal, Compliance and Intellectual Property (LCIP) team, including the Head of Litigation and Enforcement, to align IP dispute strategy with broader legal and business priorities. You will also help drive an evolving agentic IP team: attorneys and IP professionals working alongside artificial intelligence (AI) agents that carry out defined, multi-step workflows under appropriate human direction and review.

Core Responsibilities:

• Patent Strategy and Portfolios: Develop creative, business-aligned protection and enforcement strategies, leveraging your litigation experience to drive portfolio value. Build and manage global portfolios and oversee patent preparation, filing and prosecution in the United States, Europe and other key jurisdictions throughout the world.
• Disputes and Litigation Readiness: Strengthen litigation readiness and lead or support patent disputes in coordination with the internal team and external counsel. Connect prosecution, records and enforcement strategy.
• Litigation and Contested-Matter Leadership: Lead global IP dispute strategy and execution in close partnership with the Head of Litigation and Enforcement, other LCIP colleagues and external counsel. Cover patent litigation, biosimilar disputes, patent-office challenges and oppositions, and related trade secret or contractual disputes; align positions across jurisdictions and related matters.
• Scientific and Business Partnership: Act as strategic IP partner to global project teams responsible for key drug candidates across argenx's portfolio. Translate complex science and patent issues into clear recommendations that support product development, commercialization and long-term portfolio value.
• Invention and Disclosure Management: Work with scientists to identify and protect inventions, assess inventorship, manage public disclosures and strengthen trade secret protection.
• Risk and Competitive Assessment: Conduct infringement, validity, freedom-to-operate and competitive landscape analyses, identifying actionable risks and opportunities.
• Transactions and Agreements: Lead patent-related diligence and support licensing, collaborations, partnerships, mergers and acquisitions. Review, draft and negotiate IP provisions and agreements, including confidentiality, technology transfer and licensing arrangements.[KM5.1]
• Portfolio Execution: Manage external counsel and business partners, align priorities and resources, and deliver portfolio reviews, long-range planning and special projects.
• Case Assessment and Resolution: Evaluate infringement, validity, enforceability, evidence and business exposure. Develop enforcement, defense and settlement options, communicate recommendations and decision points, and seek appropriate internal approvals.
• Matter Management: Select and direct external counsel in global IP litigations and contested matters in collaboration with the Global Head of IP; oversee case plans, budgets, discovery, experts, witnesses and key submissions. Liaise closely with the Head of Litigation and Enforcement and relevant LCIP colleagues on material risks, escalation, resourcing and coordinated matter management.
• Litigation Readiness: Lead pre-dispute planning and biosimilar readiness. Work with LCIP colleagues and relevant business teams on evidence preservation, legal h