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Supporting a European Patent opposition in cancer therapy

Targeted research uncovered prior art on a specific cancer drug combination, supporting a leading pharma company's EPO opposition.
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The Challenge

High-value patent in targeted cancer therapy

We were engaged by a European patent attorney representing one of the world’s leading pharmaceutical companies to conduct an invalidity search supporting a planned opposition before the European Patent Office (EPO), against a high-value patent covering a targeted cancer therapy.

The patent claimed a specific combination of well-established therapeutic compounds. The challenge wasn’t finding prior art on the compounds themselves, but locating references disclosing their combined therapeutic use before the patent’s priority date.

The Solution

Tapping into our network of subject matter experts in pharma

We assembled a team with expertise in pharmaceutical patents, chemistry, and life sciences to conduct a comprehensive search of worldwide patent literature and related scientific publications. Working closely with the client, our researchers refined the search strategy to identify references addressing the specific drug combination and therapeutic application at issue.

Our approach included:

Cross-disciplinary expertise

Assembled a team with expertise in pharmaceutical patents, chemistry, and life sciences.

Worldwide patent and scientific literature

Searched worldwide patent literature and related scientific publications for relevant disclosures.

Refined, targeted search strategy

Worked closely with the client to refine the search toward the specific drug combination and therapeutic application at issue.

Our impact

A strong technical evidence for an EPO opposition

The search identified multiple highly relevant prior art references, including two U.S. patents and two PCT patent publications that disclosed key aspects of the claimed invention. These references provided the client with a strong technical foundation for evaluating and supporting its planned EPO opposition.

Multiple highly relevant references identified

Uncovered two U.S. patents and two PCT patent publications disclosing key aspects of the claimed invention.

Strong technical foundation delivered

Provided the client with a strong technical basis for evaluating its planned EPO opposition.

Specific drug combination disclosures uncovered

Located references disclosing the combined therapeutic use of the specific compounds at issue, ahead of the patent’s priority date.

Preparing an EPO patent opposition?

Pharmaceutical patent oppositions often hinge on identifying highly specific disclosures buried within an extensive body of scientific and patent literature. Parola Analytics can help uncover strategically important prior art for complex life sciences inventions, helping leading pharmaceutical companies make informed decisions in high-value patent disputes.

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The challenge

A leading pharmaceutical company needed prior art on a specific drug combination to support a planned EPO opposition.

Why it worked

Expert-led patent search

Combining pharmaceutical, chemistry, and life sciences expertise uncovered references disclosing the exact drug combination at issue.

The outcome

  • Multiple highly relevant references identified
  • Strong technical foundation delivered
  • Support for a planned EPO opposition
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