Marketing Expert Witness – Melbourne, Sydney, Brisbane, Adelaide, Perth and Beyond.

Michael Simonetti BSc BE MTE, is a marketing expert witness based in Melbourne, instructed by firms across Australia and internationally, including but not limited to Sydney, Brisbane, Adelaide, Perth, Auckland and Singapore. A detailed list of the cases and firms he has represented is set out on his bio and profile page. As part of his expertise, Michael assesses commercial marketing, branding and digital advertising in disputes preceding and up to the Federal Court of Australia and the State Supreme Courts.

Marketing matters turn on questions counsel cannot answer from the pleadings and statements of claim. For example; Whether consumers encountering a brand online would meet both marks at all. Whether a competitor’s search activity diverted traffic or merely coincided with a decline. Whether a campaign performed as represented, and how any of that relates to passing off, trade mark infringement, and the wider commercial, industry and market position.

The Role of a Marketing Expert Witness?

A Marketing Expert Witnesses for the courts’ role includes;

Forms part of pre-briefing sessions with a legal firm or firms representing applicants, respondents, plaintiffs or defendants in cases before the courts

Is briefed by one of the legal firms representing the party(s) to produce an expert report for the court.

Produces an independent expert report, in this field it would cover aspects of marketing, branding and digital advertising and may cover a wider commercial scope if briefed.

Produce a joint expert report if instructed by the court.

Potentially be part of a mediation, and / or court appearance to be cross examined by the opposing barrister(s) either individually or together with the opposing expert (“Hot Tub” format).

Michael’s expert witness work has covered over 100 reports covering these tasks extensively. Michael opines in reports and provides testimony which are “judge ready”, which allows someone with no marketing or digital advertising background to follow, without losing the technical precision that makes the answer both objective and proveable.

That is where the volume of work produced in the past and courtroom experience matters. Michael has been in court and worked through joint reports dozens of times, including conferences of experts, mediation, concurrent evidence sessions and cross examination. Over 2 decades of expert witness practice, he has built the legal acumen to hold a defensible technical position under pressure, which over and above writing the analysis in the first place.

What are typical Case Considerations of Marketing Expert Witnesses?

An example challenge in a passing off marketing expert matter is treating a side by side comparison as though it demonstrated confusion. Two brands placed next to each other on a courtroom screen is not how a consumer encounters them. The realistic condition is one mark, alone, on a phone, at speed, recalled imperfectly from an earlier exposure.

Material that has to be accounted for before a comparison means anything:

• Consumers almost never see the two marks together, which is the entire premise of a side by side exhibit

• The actual point of exposure, whether that is a search results page, a social feed, a marketplace listing or a shelf

• Device and screen size, which change what is visible above the fold and at what size a mark is rendered

• Imperfect recollection, since recognition against a reference is a far easier test than recall without one

• Category conventions, because much visual and verbal similarity within a sector is genre convention rather than appropriation

• Existing brand awareness in the relevant audience, which materially changes the likelihood of confusion in either direction

What survives that filtering is the comparison worth putting in front of a court. It is usually a much narrower proposition than the exhibit suggests, and it is far more difficult to explain away.

What Does a Marketing Expert Witness Assess?

Two businesses in the same sector will inevitably use similar language and target similar customers. That is competition. In digital marketing expert witness work, the strongest indicators are the choices with no commercial rationale other than the competitor’s brand.

• Paid search bidding on a competitor’s brand terms, and the match types used to capture variations of them

• Advertising copy that references the competitor’s brand, product naming or distinctive claims

• Page metadata, image alt text, schema markup and hidden text carrying the competitor’s marks

• Domain registration and renewal timing measured against the competitor’s launch or campaign dates

• Structural mirroring across a site, including navigation labels, page hierarchy and category naming

• Archived captures showing changes made shortly after the competitor published the material in issue

A single one of these proves little. A cluster of them, in a dataset that has already been filtered for ordinary category convention, is a finding that stands up under cross examination.

What Material Does an Expert Need Access To?

The categories below indicate the material typically sought in a marketing matter. The specific list is always shaped by the channels in issue and the conduct pleaded.

• Advertising platform records. Campaigns, ad groups, keywords, match types, negative keyword lists, spend, impression share and delivery data.

• Analytic exports. Traffic sources, landing pages, conversion paths and branded versus non branded query performance.

• Search console data. Query level impressions, clicks and position history for the relevant properties and period.

• Archived captures. Internet Archive and equivalent records establishing what each site displayed and when it changed.

• Brand and creative files. Development files, revisions and dated approvals establishing when each element was created.

• Agency records. Briefs, scopes of work, campaign strategy documents and correspondence with the relevant agencies.

• Third party visibility data. SEMrush or equivalent datasets covering keyword overlap, visibility and estimated traffic.

• Domain records. Registration, transfer and renewal history for the domains in issue.

For Example: Diversion and Decline Are Not the Same Finding

A drop in traffic following a competitor’s campaign is not, by itself, evidence of diversion. Search visibility moves for many reasons that have nothing to do with a respondent: an algorithm update, a seasonal cycle, a site migration, a change to the applicant’s own pages, or a shift in category demand.

Establishing diversion requires separating branded query volume from non branded, identifying the competitor’s impression share specifically on the applicant’s brand terms, and comparing the affected period against a control period where the same external factors applied. Where a decline appears across branded and non branded traffic equally, and across competitors who did nothing complained of, that pattern points away from diversion.

The technical question is what the data supports. Whether the conduct amounts to passing off or misleading conduct is a matter for the court, and the report is written so counsel can take the finding and apply the test.

For Example: What Marketing Analysis Cannot Establish

Stating the limits is part of the job, and a report that overstates its reach damages the case it was written to support.

• No analysis of aggregate data establishes that any individual consumer was actually confused. Aggregate patterns are not individual states of mind.

• Third party tools including SEMrush report modeled estimates, not measured data. They are reliable for direction and relative scale, not for precise traffic or revenue figures.

• A correlation between a competitor’s campaign and a revenue decline does not establish causation without a control period and the alternative explanations excluded.

• Keyword data alone does not establish intent, and bidding on a competitor’s brand terms is lawful in a range of circumstances.

• Analytics data is only as reliable as the tracking implementation behind it, and misconfigured tracking is common enough that it should be verified before any figure is relied on.

Courts and Typical Matters

Michael Simonetti has appeared in, or prepared expert reports and expert witness reports for, the courts below. These courts sit in multiple cities and regions across the country.

• Federal Court of Australia. Defamation, misleading and deceptive conduct, corporations, intellectual property, competition, insolvency and significant commercial disputes involving federal law.

• Supreme Court of Victoria. Major commercial litigation, large contractual disputes, shareholder and director disputes, injunctions and defamation.

• County Court of Victoria. Commercial disputes, contractual claims, damages claims and some defamation matters.

• Magistrates’ Court of Victoria. Lower value civil and commercial disputes.

Marketing matters pleaded as misleading and deceptive conduct, trade mark infringement or competition issues fall within the Federal Court of Australia’s jurisdiction, which is where most instructions of this kind are directed. Where the dispute is contractual, over campaign delivery or agency performance, it more often sits in the Supreme Court or County Court of Victoria.

Reports, Conferences and Concurrent Evidence

Over the past two decades Michael has applied both software engineering and commercial business skillsets to this work. Understanding a matter beyond the statements of claim has proven valuable for firms responding to briefs, preparing cases, and defending a position through joint reports, concurrent evidence sessions and cross examination.

Michael Simonetti holds degrees from Melbourne University in Computer Science and Engineering, together with a Masters in Telecommunications Engineering. He has 30 years of experience in software engineering, internet marketing and digital, including 30 years working commercially as the head of his own digital agencies. Over the past 15 years he has built a client portfolio comprising hundreds of legal professionals.

Firms who have instructed him include King & Wood Mallesons, Gadens, Allens, Herbert Smith Freehills, Thomson Geer, Gilbert + Tobin, Cooper Mills, Buchanan, Sterling and Gilchrist Connell, among others. Applicants and respondents range from small businesses and SMEs through to multinational corporations, across real estate, legal, hospitality, professional services, medical, travel, B2B and B2C sectors.

Services range from initial advice through to reports, affidavits and court appearances.

Interstate and International Instructions

Michael Simonetti has worked with clients and courts in New Zealand, Asia, Europe and the United States. Brands rarely advertise within a single jurisdiction, and the conduct complained of frequently originates with an entity, agency or advertising account based outside Australia.

He travels frequently for this work, although most briefings and meetings are held online, which keeps a marketing expert witness instruction practical for firms in Sydney, Brisbane, Adelaide, Perth or overseas.

Instructing Michael Simonetti

An initial call establishes the technical questions genuinely in dispute and clears any conflict. Where the matter is at an early stage, that call is also the point at which discovery categories and materials can be scoped so the evidence that matters is actually captured. AndMine coordinates the engagement, and can arrange contact with an expert witness reference on request. For more information, please contact Michael Simonetti at AndMine.