Sanitized case study 05
Extraction of Antibacterial Peptide and Albumin from Pea Whey Wastewater
Five-country grant path: China, Belgium, France, Canada, United States
The case shows coordinated prosecution across multiple jurisdictions.
FIELD: Food biotechnology / global patent strategySTAGE: SANITIZED TECHNICAL REVIEWRESULT: Five-country grant path: China, Belgium, France, Canada, United States
Review boundary
Food biotechnology / global patent strategy
This is a sanitized technical-prosecution note prepared for peer-agency due diligence. Full file histories, claim amendments, cited references, and client documents are shared only after NDA and conflict clearance.
EXAMINER LOGIC
How the rejection framed the case
Inventive-step and formal issues arose in China, EPO/Belgium, and France, with France also involving third-party observations from a competitor. The key disputes concerned multistage filtration, papain enzyme use, temperature range, membrane operation order, and the sequence of concentration, pH adjustment, and sterilization.
FIP RECONSTRUCTION
How the response rebuilt the case
We adapted the strategy by jurisdiction: blocking element-mosaic reasoning in China, narrowing claims and adding the critical 40-50°C range in Belgium, correcting support and terminology issues in France, and using the Chinese grant as a PPH basis in the US and Canada. The constant theme was experimental-data-backed proof that the process order and parameter selection were not routine optimization.
OUTCOME
What changed procedurally
All five jurisdictions granted. This case demonstrates not only response drafting, but also global filing strategy, PPH use, third-party observation defense, and cross-jurisdiction coordination.
Deep technical note
Detailed English-only prosecution analysis.
This section expands the case beyond the homepage summary so foreign counsel can assess the reasoning pattern, not just the outcome.
Diagnostic read
- Inventive-step and formal issues appeared across China, Belgium, France, Canada, and the United States.
- The disputes focused on filtration stages, enzyme use, temperature selection, membrane operation order, and the concentration-pH-sterilization sequence.
- France also involved third-party observations, requiring careful handling of support, terminology, and technical evidence.
Response architecture
- Use experimental data to prove that the process order and parameter selection were not routine optimization.
- Adapt the claim strategy by jurisdiction, including narrowing in Belgium, support correction in France, and PPH acceleration in North America.
- Keep the global argument consistent while respecting local procedural differences.
Due-diligence takeaways
- A strong Chinese grant can become part of a broader international prosecution strategy.
- Experimental data is often decisive when process-order inventiveness is challenged.
- Cross-border coordination matters when the same invention faces different objections in different offices.
What a peer firm can test
For a live matter, we normally ask for the relevant patent office or jurisdiction, prosecution stage, core rejection issue, principal cited references, current deadline, and a neutral technical summary. Client names and unpublished full documents can wait until NDA and conflict clearance are complete.
The first review focuses on whether the examiner has mis-modeled the technical problem, overstated a motivation to combine, relied on unsupported common knowledge, or missed an allowance route available through disciplined claim amendment.