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Invalidating a patent on the dosage regimen of a multimillion-dollar drug to help in generic drug entry

Value Delivered

The prior art enabled the client to file an opposition against a threatening patent, resulting in the client’s entry into the market with their generic drug.

Problems Solved

Invalidating dosage regimen patents is challenging due to their complex claims with narrow limitations. In this specific case, the challenge arose in linking a disease’s surrogate marker to the dosing nuances of a supporting therapy— a connection completely missing in traditional patent searches. 

Even unconventional explorations like conference posters, textbooks, and videos offered no breakthrough. Adding to the complexity, the need for equivalence among multiple claimed factors and precise frequency of adjustments posed an extra layer of difficulty.

Solution Offered

When the usual alternatives to conventional search strategies, like exploring posters, meeting abstracts, and conferences, failed, a deeper search for clinical trials was performed.

Analyzing the methodologies discussed in such clinical trials led us to confirm the link between the surrogate marker and the therapy, as well as the frequency of adjustment for the patients. 

Download the full case study to gain a deeper understanding of the intricate details and the thought process behind GreyB’s successful prior art search strategy.

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Researchers Driving Success of the Patent Invalidity Project

Picture of Najeeb Chodankar
Najeeb Chodankar

Team Lead at GreyB

Experience in Molecular Biology, Pharmaceutics, Viral Vectors, Structural Heart Diseases, Surgical Devices, Medicinal Chemistry, Biologics, Plant Science

Infringement Analysis - 1
Freedom to Operate Searches - 49
Patentability - 10+
Invalidation Searches - 60+
Landscape Studies - 6

Akshita Varshney

Senior Research Analyst at GreyB

Experience in Diagnostic techniques, Food Tech & Fermentation, Medtech, Molecular biology, Probe/Primer sequences, Plant Science, Pharmaceutical Technology.

Invalidation Search (30+)
Licensing Opportunities (1)
Design Search (1),
Freedom to Operate (15+)
Detailed Infringement Analysis (1)
Patentability Search (3)

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