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Patent litigation

Patent disputes, argued on the technology and the law.

When a patent dispute threatens a product line, a licensing programme or a deal, the outcome depends on how well the technology is understood and how early the strategy is set. We support patent owners and accused infringers from the first infringement opinion to settlement, working alongside your trial counsel or coordinating leading litigators in each jurisdiction.

  • Infringement and validity opinions grounded in claim construction and evidence
  • Expert affidavits and technical reports that stand up to cross-examination
  • Multi-jurisdiction disputes coordinated with leading local litigators
20+Years in patent practice
150+Jurisdictions coordinated
Both sidesPatent owners and defendants

Discuss your dispute

Tell us about the patent and the dispute. An attorney replies within one business day with next steps.

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Confidential. Reviewed only by our patent attorneys.
Our role

In a patent dispute, the first moves matter most.

Patent litigation turns on two questions: does the product fall within the claims, and are the claims valid? Answering them well takes a deep understanding of the technology, careful claim construction and evidence that holds up under challenge. Getting them right before the first letter is sent, or answered, shapes everything that follows.

We bring that technical and patent depth to your side of the dispute. We work with in-house legal teams and trial counsel, preparing the analysis, evidence and experts, and coordinating litigators in each country where the dispute runs.

At a glance

Acting for
Patent owners and accused infringers
Forums
National courts, UPC, ITC, PTAB, patent offices
Key issues
Infringement, validity, damages, injunctions
Evidence
Claim charts, prior art, expert reports
Outcomes
Injunction, damages, licence, revocation, settlement
Our role
Strategy, analysis, evidence and counsel coordination
Our litigation services

From the first notice to the final settlement.

Patent attorneys, technical specialists and litigation partners working as one team, on whichever side of the dispute you are.

01

Infringement analysis and opinion

A clear, reasoned view on whether a product infringes, before anyone commits to a course of action. We construe the claims, map them to the product and test the result against the strongest counter-arguments.

  • Claim construction from the specification, file history and case law
  • Element-by-element infringement and non-infringement charts
  • Literal infringement and doctrine of equivalents assessed
  • Indirect, induced and divided infringement considered
  • Damages period and products in scope identified
  • Written opinions for boards, insurers and counsel
02

Cease and desist (legal notice)

The first letter sets the tone of the dispute. We draft and answer notices that are firm, precise and strategically timed, without exposing you to avoidable risk.

  • Notices backed by claim charts and evidence of use
  • Timing set against declaratory judgment and forum risk
  • Responses that preserve every defence and avoid admissions
  • Wilfulness and notice consequences assessed
  • Requests for information and standstill proposals
  • Negotiation paths kept open from the first contact
03

Revocation and invalidation proceedings

Often the strongest answer to an infringement claim is to attack the patent itself. We build validity challenges that run alongside, or ahead of, the infringement case.

  • Revocation actions, invalidation requests, IPR and PGR
  • Counterclaims for revocation in infringement suits
  • Prior art and validity searches that find the decisive art
  • Anticipation, obviousness, sufficiency and added matter grounds
  • Claim amendment and auxiliary request strategy for patentees
  • Coordination with oppositions running in parallel
04

Litigation support and representation

Technical and patent expertise that strengthens the trial team at every stage, from pleadings to trial.

  • Case strategy alongside your trial counsel
  • Pleadings, infringement and invalidity contentions
  • Claim construction and Markman briefing support
  • Discovery requests and technical document review
  • Source code review planning and support
  • Coordination of local litigators in each jurisdiction
05

Expert affidavits and technical reports

Expert evidence often decides patent cases. We prepare reports that are technically rigorous and clear enough for a judge to follow.

  • Identification and conflict screening of independent experts
  • Briefing, technology tutorials and document packs
  • Opening and rebuttal reports on infringement and validity
  • Affidavits and declarations for interim relief
  • Preparation for cross-examination and deposition
  • Support during trial testimony
06

Settlement and licensing negotiations

Most patent disputes end in a deal. We make sure it is the right one, backed by a realistic view of the merits and the value.

  • Merits and exposure assessment to set negotiating positions
  • Royalty base, rate and apportionment analysis
  • Comparable licence review
  • Licence, settlement and covenant-not-to-sue terms
  • Portfolio cross-licensing and FRAND discussions
  • Mediation and arbitration preparation
Disputes we handle

Every kind of patent dispute, in every major industry.

From a single demand letter to a multi-country SEP campaign, we bring the same technical depth and strategic discipline.

Utility patent infringement

Core infringement actions over products, processes and software, for patentees and defendants.

SEP and FRAND disputes

Standard essential patents in cellular, Wi-Fi, video and IoT, including essentiality, FRAND rates and anti-suit issues.

Pharmaceutical and biosimilar

Generic and biosimilar challenges, including Hatch-Waxman and BPCIA proceedings in the US and equivalents abroad.

ITC Section 337

Exclusion order investigations at the US International Trade Commission, with technical and domestic industry support.

Declaratory judgment actions

Proactive actions for non-infringement or invalidity, to clear the path or choose the forum.

NPE and assertion campaigns

Defence against patent assertion entities, including joint defence groups and early validity challenges.

Licensing and royalty disputes

Disputes over licence scope, royalty reports, audits and breach, often alongside infringement claims.

Cross-border and UPC actions

Coordinated proceedings across Europe and beyond, including Unified Patent Court actions with multi-country effect.

Preliminary injunctions

Urgent interim relief sought or opposed, with evidence prepared on short timelines.

Early case assessment

Six questions answered before costs escalate.

The first weeks of a dispute decide most of its cost and outcome. Our early case assessment gives decision makers a clear, evidence-based view on each of these.

Infringement read

How strong is the infringement case, claim by claim?

  • Claim charts for asserted claims
  • Literal and equivalents positions
  • Weakest elements identified

Validity exposure

How likely are the claims to survive a challenge?

  • Prior art and validity search
  • Ranked invalidity grounds
  • Post-grant and opposition options

Damages and exposure

What is realistically at stake?

  • Products, revenues and time period
  • Royalty and lost profits indicators
  • Injunction risk assessed

Forum and venue

Where should the dispute be fought, or where will it be?

  • Forum and venue options compared
  • Speed, cost and remedies by forum
  • Parallel proceedings mapped

Defences and design-arounds

What options does the defendant have beyond the merits?

  • Licence, exhaustion and prior use
  • Design-around feasibility
  • Prior user rights where available

Settlement value

What would a sensible deal look like?

  • Settlement range and structure
  • Comparable licences
  • Recommended negotiation strategy
Which side are you on?

Enforcing a patent or defending against one.

The tools are the same; the strategy is not. We shape every step around your position and your commercial goal.

For patent owners

Enforcing your patent

Turn infringement into an injunction, damages or a licence.

  • Confirm infringement with claim charts and evidence of use
  • Test validity before you assert, and strengthen weak claims
  • Screen the family for continuations and better-fitting claims
  • Choose the forum, the timing and the defendants
  • Assess remedies: injunction, damages or exclusion order
  • Draft the notice and set the negotiation strategy
  • Prepare for the validity counterattack in advance
  • Support the complaint, contentions and experts
  • Coordinate parallel actions in other countries
  • Negotiate licences and settlements from strength
For accused infringers

Defending against an assertion

Answer the claim on the merits and on validity.

  • Assess the notice and the real level of risk
  • Preserve documents and avoid harmful admissions
  • Build non-infringement and claim construction positions
  • Attack validity through revocation, invalidation or IPR
  • Check licence, exhaustion and prior use defences
  • Assess design-arounds to cap future exposure
  • Consider declaratory actions to choose the forum
  • Prepare expert evidence on infringement and validity
  • Coordinate with suppliers, customers and co-defendants
  • Negotiate exits, licences and covenants on fair terms
Where disputes are fought

Every major patent forum, one coordinated strategy.

Global disputes often run in several countries at once. We coordinate leading local litigators under one strategy, so evidence and positions stay consistent everywhere.

United StatesDistrict courts, ITC, PTAB
Known for
Jury trials, significant damages awards and ITC exclusion orders
EuropeUnified Patent Court
Known for
One action with effect across the participating EU member states
GermanyRegional courts, Federal Patent Court
Known for
Fast infringement actions, with validity decided separately
United KingdomPatents Court
Known for
Disclosure, cross-examination and influential FRAND rulings
NetherlandsDistrict Court of The Hague
Known for
Fast proceedings and expertise in cross-border relief
FranceParis Judicial Court
Known for
Saisie-contrefaçon evidence seizures before or during proceedings
ChinaSpecialist IP courts
Known for
High case volumes, evidence preservation orders and rising damages
JapanTokyo and Osaka district courts
Known for
Specialist IP divisions and the IP High Court on appeal
South KoreaDistrict courts, Patent Court
Known for
Specialist Patent Court for validity and infringement appeals
IndiaHigh Courts, Delhi IP Division
Known for
Interim injunctions and active pharma and SEP litigation
BrazilState and federal courts
Known for
Preliminary injunctions, with validity decided by federal courts
CanadaFederal Court
Known for
Judge-only trials with full documentary and oral discovery

Court representation is provided through qualified local litigators in each jurisdiction, working with our patent and technical team.

Expert evidence

The technical case, made clear to the court.

Judges decide technical disputes on expert evidence. We find the right experts, brief them thoroughly and help them explain complex technology simply.

Expert identification

Independent technical experts found and screened for conflicts, credentials and prior testimony.

Briefing and document packs

Patents, prior art, product evidence and the file history organised for efficient expert review.

Technology tutorials

Clear explanations of the technology for counsel, experts and, where allowed, the court.

Opening and rebuttal reports

Infringement and validity reports drafted with experts, supported by charts and evidence.

Deposition and cross-examination

Experts prepared for the questions they will face, with weak points addressed in advance.

Damages support

Technical input on apportionment, the smallest saleable unit and comparable technologies.

How we work

From early assessment to resolution.

A structured approach puts the strategy in place before costs escalate, and keeps it consistent through to the end.

  1. 01

    Conflicts and intake

    Conflicts cleared, documents preserved, urgent deadlines set.

  2. 02

    Early case assessment

    Merits, validity, exposure and forum reviewed within days.

  3. 03

    Notice or response

    Letters drafted or answered to protect your position.

  4. 04

    Proceedings

    Pleadings, contentions, validity challenges and claim construction.

  5. 05

    Experts and trial

    Expert reports, depositions and trial support.

  6. 06

    Resolution and appeal

    Judgment, licence, settlement or appeal on the right terms.

Strategy before action

A notice sent too early can invite a pre-emptive suit; a reply sent too quickly can give away a defence. We assess merits, validity and forum first, so the first move is the right one.

Discuss your dispute
Ways to work with us

From a first assessment to a global campaign.

Choose the engagement that fits the stage of your dispute. Each can be scaled up as the matter develops.

Option 01 of 06

Early case assessment

A fast, fixed-scope view of merits, validity, exposure and options, so decision makers know where they stand before costs escalate.

  • Infringement read on the asserted or target claims
  • Validity exposure and best prior art
  • Realistic damages and injunction risk
  • Forum and parallel proceeding options
  • Board-ready summary with a clear recommendation
  • Fixed fee, delivered within days
Discuss this option
Industries we serve

Technical depth in the fields shaping what comes next.

Our attorneys and technical specialists work in the technologies where filing activity is growing fastest, so technical issues are argued by people who understand the science.

Artificial intelligence & ML

Models, training methods and AI applications

Semiconductors

Chip design, fabrication and packaging

Telecom, 5G & IoT

Wireless standards, networks and connected devices

Electric vehicles & mobility

Batteries, charging and drive systems

Clean energy & climate tech

Solar, storage, hydrogen and carbon capture

Robotics & automation

Industrial robots, control and machine vision

Medical devices & digital health

Devices, diagnostics and health software

Biotechnology & genomics

Biologics, gene editing and sequencing

Pharmaceuticals

Formulations, processes and new uses

Fintech & digital payments

Payments, security and financial platforms

Consumer electronics & wearables

Devices, sensors and user interfaces

Advanced materials & chemistry

Materials, polymers and chemical processes
Why AnalystIP

The technical depth behind winning patent cases.

Global companies and law firms bring us in when the technology is complex and the stakes are high.

Patent attorneys with contentious experience

Claim construction, infringement and validity analysis as a daily practice.

Technical specialists

Engineers and scientists who can match the other side's experts point for point.

Decisive prior art

In-house search teams that look beyond patents to papers, standards and products.

Global coordination

Multi-country disputes run under one strategy with leading local litigators.

Evidence that holds up

Charts and reports with every source cited, archived and preserved.

Built for court timetables

Teams sized to meet contention, report and trial deadlines.

Commercial judgement

Advice tied to exposure, value and the deal that ends the dispute.

Clear reporting

Board-ready summaries alongside detailed technical analysis.

Confidential and conflict-checked

Strict confidentiality, conflict checks on every matter, and work structured to support privilege with your counsel.

FAQs

Questions about patent litigation.

Answers to what in-house teams and counsel ask us most.

Received a notice?

Do not reply yet. Send it to us and we will come back with an assessment within one business day.

Discuss your dispute
01I have received a cease and desist letter. What should I do?

Do not ignore it, and do not reply in haste. Preserve relevant documents, avoid admissions, and have the patent assessed for infringement and validity before responding. The first reply can shape the whole dispute.

02What is an infringement opinion?

A written analysis by a patent professional of whether a product falls within the claims of a patent, based on claim construction and the evidence. It informs decisions to launch, assert, defend or settle.

03What does an early case assessment cover?

Infringement strength, validity exposure, realistic damages and injunction risk, forum options, available defences and a sensible settlement range, summarised for decision makers.

04Can a patent be invalidated during litigation?

Yes. Defendants commonly counterclaim for revocation, or challenge validity in a parallel forum such as the PTAB, the EPO or a national patent office. Some countries, such as Germany, decide validity separately from infringement.

05Which forum is best for a patent dispute?

It depends on where the products are made and sold, the remedies you need, speed, cost and the strength of the patent. We compare the options, including the UPC, US courts and the ITC, before any action is filed.

06Do you work with our existing trial counsel?

Yes. We often work alongside in-house teams and outside litigators, providing claim analysis, evidence, prior art and expert support, and coordinating counsel in other countries.

07Can you handle disputes in several countries?

Yes. We coordinate parallel proceedings with local litigators, keeping claim construction, evidence and positions consistent across every forum.

08Do you handle SEP and FRAND disputes?

Yes. We analyse essentiality, map standards to products, assess comparable licences and support FRAND negotiations and litigation.

09How are most patent disputes resolved?

Most settle, often through a licence. The strength of each side's infringement and validity positions largely decides the terms, which is why early analysis matters.

10Is our discussion confidential?

Yes. Every enquiry is treated in confidence and checked for conflicts before we review any details.

Related services
Patent oppositionChallenge or defend at the office
Infringement searchEvidence of use
Validity & invalidityPrior art that decides cases
Claim chartsElement-by-element mapping
Facing a patent dispute?

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Tell us about the patent and the dispute. An attorney will reply within one business day.

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