Patents and texture analysis in pharma/medical claim substantiation

The pharmaceutical and medical device industries operate under some of the most demanding regulatory and legal scrutiny of any sector. A product claim – whether describing the mechanical integrity of a tablet, the flexibility of a drug-eluting film, the hardness of a dental preparation or the cohesion of a wound dressing – must be backed by rigorous, reproducible, standardised data. In this context, the Stable Micro Systems Texture Analyser has established itself as a critical instrument for translating formulation innovation into patent-ready quantitative evidence.

Why claim substantiation is essential in Pharma and MedTech

Unlike food products, where a claim of 'improved texture' might be benchmarked against consumer preference, pharmaceutical and medical device patents must often define performance within a specific numerical range that directly correlates with clinical safety and efficacy. A tablet that is too hard may not disintegrate correctly; one that is too soft may break during manufacture or packaging. An oral film that lacks sufficient tensile strength will tear on handling; one that is too rigid may be uncomfortable for the patient.

These are not subjective preferences – they are functional requirements, and demonstrating that a novel formulation meets them requires instrument-generated data. Explore the full range of pharmaceutical and medical applications supported by the Texture Analyser.

Patent highlights across the Pharmaceutical and Medical sector

Chinese University of Hong Kong

Oral drug delivery – Orally dissolving films for nifedipine and ropinirole 

This patent covers orally dissolving films (ODFs) designed to deliver nifedipine (a calcium channel blocker) and ropinirole (a Parkinson's disease drug) via the buccal or sublingual route, bypassing first-pass hepatic metabolism. Mechanical characterisation was carried out using a TA.XTplusC Texture Analyser with Miniature Tensile Grips. Films were held 10 mm apart and pulled; tensile strength and elongation at break were recorded. A film that snaps too easily cannot be handled by a patient with motor impairment, while one with poor elongation may be uncomfortable in the oral cavity. The Texture Analyser data provided the mechanical profile that made the ODF's performance claims clinically meaningful and legally defensible.

(see patent number: US20180000725)

International N&H Denmark ApS

Health-promoting chewable product

This patent covers chewable products with health-promoting properties for humans and companion animals. Chew resistance – the force required to penetrate the product to a defined depth without fracture – was measured using a TA-XT2i Texture Analyser fitted with a 2mm Ø  Cylinder Probe. The maximum force recorded was used to define a chew resistance window far exceeding that of existing products, with the instrument data forming the direct basis of the performance claims.

(see patent number: WO2012052425A1)

Unilever

Antiperspirant soft solid composition

Unilever used the TA.XT2i Texture Analyser with a Spherical Probe to define the hardness window of their soft solid antiperspirant formulations. Hardness – expressed in N/mm² – defined the product category and was central to the patent claims. Crucially, competitor products were also characterised using the same protocol, establishing a clear numerical boundary between the claimed formulation and the prior art landscape.

(see patent number: WO2001051020A1)

Antiperspirant soft solid manufacturing process

A linked Unilever patent for the injection moulding manufacture of antiperspirant soft solids used the TA.XT2i with identical test parameters to specify a hardness range of 0.003 to 0.5 N/mm² for the product category. By grounding a manufacturing process claim in instrument-measured product properties, Unilever ensured the patent covered both the formulation and the production method – a dual-layer protection strategy that only quantitative texture data makes possible.

(see patent number: WO2001076409A1)

Dental, devices and beyond

The Texture Analyser addresses a remarkably broad range of pharmaceutical and medical mechanical testing needs: tablet hardness and friability, capsule burst strength, suppository firmness, transdermal patch adhesion and peel force, blister and strip pack puncture resistance, syringe plunger force, and the gel strength of topical and wound care formulations. Explore dental applications and medical device testing to see the full scope.

For pharmaceutical and medical device R&D scientists, the Texture Analyser is not optional equipment – it is a core part of the innovation workflow. The quantitative data it generates can be the difference between a broad, defensible patent and one that a competitor can easily design around.