What evidence helps establish the financial harm caused by copying or misuse?

In an IP dispute, evidence that someone copied your work or misused confidential information does not itself establish the amount of financial harm. You need to explain the economic effect and connect it to the conduct concerned. The value of the asset, the amount spent developing it and the loss caused by misuse answer different questions.

The available financial remedies depend on the right, jurisdiction and circumstances. Start with your lawyer and, where appropriate, a financial expert to identify the assessment needed. The practical task is to assemble records that let them examine both the claimed loss and alternative explanations.

Identify the financial effect you are claiming

Describe the affected product, service, licence or opportunity and the relevant period. A broad statement that “the business lost value” gives an expert little to test. A claim that particular customers switched suppliers, or that you reduced prices on a defined product line, points to records that can be examined.

Useful starting points include:

These are evidence categories, not a list of amounts automatically recoverable. Keep response costs and legal expenses separately identified so that your adviser can assess their treatment.

Connect the change to the alleged conduct

Build a timeline linking the relevant copying, disclosure or use to the financial events. Customer messages explaining a switch, a competing offer referring to the disputed features, or a cancellation shortly after a particular launch may help investigate the connection. Timing alone leaves other explanations open.

In a hypothetical dispute, a design studio says copied furniture caused a decline in orders. Its records also show delivery delays during the same period. The assessment needs to distinguish customers attracted by the competing design from those who left because the studio could not deliver. Keep correspondence and operational records supporting either explanation.

WIPO’s discussion of monetary remedies in trade-secret disputes emphasises the causal connection between the misconduct and the loss or benefit claimed. A fall in revenue across the whole business needs more explanation than a set of identified transactions connected to the dispute.

Support what would probably have happened otherwise

Assessing lost profits requires an estimate of the business you would have done without the alleged conduct. Give the expert historical sales, seasonality, repeat-order patterns, capacity constraints and forecasts prepared before the dispute. Explain changes in market demand, costs or competition that would have affected results anyway.

For example, suppose the studio claims it lost an order for 100 chairs priced at €200 each. The €20,000 order value is revenue, not automatically lost profit. The assessment must consider the costs of fulfilling the order, whether the studio could have supplied it, and any replacement business obtained. The appropriate calculation depends on the facts and applicable law.

Use the forecasts and budgets that actually existed at the relevant time. If you prepare a new estimate, label it as such and show how it was constructed. For a new product without a sales history, distinguish firm orders from enquiries, proposed contracts and management expectations.

Use timestamped records to establish the earlier commercial position

A forecast preserved and timestamped before the alleged misuse can help answer a specific challenge: was this expectation documented at the time, or constructed later to support the claim? The same applies to a pricing proposal, development budget or licensing offer. Link each record to the product or know-how concerned and explain how it contributes to the financial assessment.

For the furniture studio, a timestamped sales forecast and cost model from before the competing launch would give the expert a dated starting point for examining expected orders and margins. Customer correspondence and actual trading results would then help assess whether those expectations were realistic and why results differed.

Different records support different parts of the assessment. An earlier licensing offer documents the terms proposed at that stage; preserve the negotiation and any acceptance alongside it. Successive trial reports and project accounts can document the development history used to assess a claimed saving in research time or cost. In each case, the timestamp helps establish which version existed by a particular date, while the contents and supporting records explain its financial relevance.

If you only begin timestamping after the dispute arises, retain the earlier source records and distinguish their dates from the later timestamp. That later record provides a reference for the material assembled at that point. Read more about what a digital timestamp establishes.

Keep other measures separate from your own lost profits

Your loss may not be the only relevant financial measure. In the EU, Article 13 of the IP Enforcement Directive and Article 14 of the Trade Secrets Directive address factors including lost profits and unfair profits made by the infringer. They also provide for royalty-based lump sums in appropriate cases. National law and the facts determine which approach applies.

For a royalty-based assessment, keep licences and negotiations that can be meaningfully compared with the use at issue. Identify differences in territory, duration, exclusivity, permitted uses and any services included in the price. A fee for a broad commercial package may not be comparable to use of one design or one part of a process.

For trade secrets, development records may help assess a claimed benefit from avoiding research or reaching the market sooner. WIPO discusses development costs as a possible measure of unjust enrichment in particular circumstances. Your entire R&D budget is not automatically the other party’s saving: identify the work connected to the information used and the basis for estimating what was avoided.

Likewise, the other party’s total sales are not automatically profits attributable to your IP. Separate established figures from estimates, identify missing information and let your adviser assess how it might be obtained. Keep alternative calculations distinct and flag overlaps so the same effect is not counted twice.

Make the calculation traceable

Retain the underlying accounting exports, invoices, contracts and correspondence, together with the calculation files. Record the period, currency, product scope, data sources and assumptions. Explain allocations where a cost or revenue figure covers several products or activities.

Preserve and timestamp significant versions of the financial analysis together with the source extracts and assumptions used. This gives your adviser or expert an identifiable, dated package to review and lets later revisions be compared with it. Explain material changes, such as replacing an estimated cost with an invoice or correcting the affected sales period. Show where an estimate depends on uncertain facts and how different reasonable assumptions affect it. This helps an adviser or expert assess the strength of the claim and the information still needed, including during settlement discussions.

Financial records may themselves reveal confidential margins, prices or customer information. Agree the disclosure arrangements before circulating them; see how to use confidential know-how as evidence in a dispute without making it public.