Infringement response + administrative action

    Someone is using your patented invention. Respond the right way.

    We assess the infringement, send or respond to cease-and-desist letters, and file administrative cancellation or invalidation actions at the patent office. When a matter heads to court, we coordinate local litigation counsel — GTC handles the prosecution and administrative work.

    From $2,500 — scoped and quoted in writing before any work.

    GTC patent attorney preparing an infringement response and cease-and-desist letter
    1,398+ patents10,000+ clients11 attorneys10+ years
    IIPLA Top IP Consultancy 2026Upwork · Top Rated Plus

    Trusted by founders and brands worldwide

    AtlysPerforaSoxcoBossCareInnovistBacardiFootcare LabBare AnatomyFreedom

    How it works

    Three steps to a considered response.

    1

    Free assessment call

    30 minutes. You describe the dispute — your patent, the product or party involved, and what you want to achieve. We confirm whether enforcement is the right path and scope the work.

    2

    Claim-chart and strategy

    A practitioner maps your granted claims against the accused product or the patent you want challenged, then recommends a route: a demand letter, an administrative action at the office, or coordination with litigation counsel.

    3

    Action filed or letter sent

    We send or respond to the cease-and-desist correspondence, file the administrative cancellation or invalidation petition, or open licensing-settlement talks — with every step documented in your portal.

    What it costs

    Priced by engagement phase.

    Patent Enforcement starts from $2,500. Patent enforcement is scoped to the dispute, so every engagement is quoted in writing after the free assessment call. The anchor below reflects a typical opening phase — an infringement assessment with a claim chart and a cease-and-desist letter. Administrative actions and settlement work are quoted separately once the route is chosen. You approve each phase before it starts.

    What's included

    • Free 30-min assessment call before any work begins
    • Claim chart mapping your granted claims to the accused product
    • Cease-and-desist letter drafted, or a received letter assessed and answered
    • Validity review of the asserted or target patent
    • Administrative cancellation / invalidation petition prepared and filed (quoted per action)
    • Licensing and settlement negotiation, with the agreement drafted
    • Local litigation counsel coordinated when a matter reaches court
    • Every step documented in your client portal
    Infringement assessment + claim chart
    From $2,500
    Cease-and-desist letter (drafted or response)
    Quoted after assessment
    Administrative cancellation / invalidation action
    Quoted per action
    Licensing-settlement negotiation + drafting
    Quoted by scope

    Official patent-office fees for an administrative action, and any local litigation-counsel fees, are billed separately at cost and confirmed before filing.

    Get started

    Start an enforcement review

    Tell us about the dispute — your patent and the product or party involved — and a patent attorney will assess the infringement and lay out your options.

    No payment required Reply within 1 business dayA GTC attorney reviews it & sends a flat-fee quote.
    1. 01Your request
    2. 02Documents
    3. 03Your details
    If you are facing a deadline, such as a post-grant opposition window, note it here so we can prioritise the review.

    Your request

    1

    A short label — for example "Patent X vs Competitor Y".

    2

    Your patent number(s). Enforcement needs a granted patent — a pending application cannot yet be enforced.

    3

    Describe the infringing product or process, who makes or sells it, and where. Links or model numbers help.

    4

    Enforcement can aim to stop the infringer, turn them into a paying licensee, or recover damages.

    5

    The countries where the infringing product is made or sold — patents are enforced country by country.

    Why GTC

    Enforcement handled by people who prosecute patents.

    Handled by
    GTC's patent team
    Patent counsel
    Attorney-led prosecution

    Claim-by-claim analysis

    Before any letter goes out, a practitioner charts your granted claims against the accused product. A demand built on a real infringement read carries weight; a vague threat invites a counter-attack on validity.

    Administrative actions

    We file cancellation and invalidation petitions directly at the patent office — inter partes and post-grant review, EPO opposition, CNIPA invalidation, and the equivalent procedures elsewhere. These are tribunal proceedings before the office, not court cases.

    Settlement and licensing

    Most disputes resolve without a tribunal. We negotiate cease-and-desist outcomes, coexistence terms, and licensing settlements, then paper the agreement so the resolution holds.

    Coordinated across offices

    Patents are territorial, so enforcement is too. We run the administrative side across the major patent offices and coordinate local litigation counsel wherever a court filing is required.

    Your Customer Success Team

    A dedicated team that owns your matter from start to finish.

    Every GTC client gets a dedicated Account Manager and a Senior Account Manager who learn your business and stay with you from first email to final filing. They are named people who pick up the phone and already know your matter, so every step moves forward without delay.

    Your Account Manager

    Your day-to-day point of contact, who coordinates every matter, keeps things moving, and already knows your file. They have your full history, so you start every conversation where the last one left off.

    Your Senior Account Manager

    Senior oversight on strategy and escalations, stepping in as your needs grow, so every important detail stays on track.

    A named person, on email or a call, at every step.

    Your dedicated GTC Customer Success Team

    How we compare

    Responding to infringement? Here's how GTC works.

    What you get GTC Online filing services Doing it yourself
    Claim chart mapping granted claims to the accused product
    Administrative cancellation / invalidation filed at the patent office
    Cease-and-desist drafted by a registered patent practitioner
    Licensing-settlement negotiation and agreement drafting
    Local litigation counsel coordinated when a matter reaches court
    Generic demand-letter templates

    Claim chart mapping granted claims to the accused product

    GTC
    Online filing services
    Doing it yourself

    Administrative cancellation / invalidation filed at the patent office

    GTC
    Online filing services
    Doing it yourself

    Cease-and-desist drafted by a registered patent practitioner

    GTC
    Online filing services
    Doing it yourself

    Licensing-settlement negotiation and agreement drafting

    GTC
    Online filing services
    Doing it yourself

    Local litigation counsel coordinated when a matter reaches court

    GTC
    Online filing services
    Doing it yourself

    Generic demand-letter templates

    GTC
    Online filing services
    Doing it yourself

    The timeline

    From assessment call to a filed action or sent letter.

    Enforcement timelines depend on the route you choose and the office's own calendar. Here is how a typical engagement breaks down — and where the decision points sit.

    1. Day 1 — free

      Assessment call

      You describe the dispute. We confirm whether enforcement fits, flag any pressing deadline such as a post-grant opposition window, and scope the work in writing.

    2. Week 1–2

      Claim chart and strategy

      A practitioner charts the granted claims against the accused product or the target patent and recommends a route — demand letter, administrative action, or litigation-counsel coordination.

    3. Week 2–4

      Letter sent or petition filed

      We send or respond to the cease-and-desist correspondence, or file the cancellation or invalidation petition at the office. Strict post-grant deadlines, such as the EPO's nine-month opposition window, are calendared and met.

    4. Ongoing

      Office proceeding or settlement

      Administrative proceedings run on the office's schedule, often over many months. Where talks open, we negotiate licensing or coexistence terms and paper the settlement. The office or tribunal decides any contested outcome.

    In their words

    All your legal, in one place.

    One accountable team across every practice, operating since 2016.

    1,398+
    Patents prosecuted
    10,000+
    Clients served
    11
    In-house attorneys
    10+
    Years since 2016

    Patent Enforcement FAQ

    Frequently asked questions

    No. GTC handles the prosecution and administrative side — cease-and-desist correspondence, administrative cancellation and invalidation actions at the patent office, and licensing settlements. When a dispute requires a court filing or a hearing before a judge, we coordinate local litigation counsel qualified to appear in that court and work alongside them.

    Get a candid read before you send a single letter.

    Ready when you are.

    A free assessment call. We'll talk through the dispute, flag any deadline, and lay out the routes — demand letter, administrative action, or litigation-counsel coordination — with the fee scoped in writing before any work begins.

    GTC counsel on a client consultation call

    We use cookies to improve your experience.We use cookies to improve your experience, analyze site traffic, and personalize content. Learn more about cookies