TECHNICAL SERVICES · SEQUENCE LISTING PREPARATION (ST.26)
Sequence Listing Preparation
Professional biological sequence listing preparation and validation compliant with WIPO ST.25 and ST.26 requirements, helping patent applicants create accurate, submission-ready sequence listings efficiently.
WHY IT MATTERS
The problem it solves
Reduces the complexity of preparing nucleotide and amino acid sequence listings for patent applications.
Helps identify and correct sequence-listing formatting and data inconsistencies.
Supports transition and conversion of legacy ST.25 listings to ST.26 where applicable.
Reduces manual effort involved in sequence identification, annotation, formatting, and validation.
Helps ensure sequence listings contain the information required under the applicable WIPO standard.
HOW IT WORKS
From raw sequence data to a filing-ready listing
The same sequence on every engagement, in your system, to your rules.
- 01
Sequence identification
Raw or existing sequence data is identified, organized and numbered.
- 02
Annotation and qualifiers
Features and qualifiers are prepared to the applicable WIPO standard.
- 03
Conversion and validation
ST.25 listings are converted where needed and every listing is validated.
- 04
Filing-ready delivery
The ST.26 XML or ST.25 listing is delivered ready to file.
What it does
Preparing compliant sequence listings can be time-consuming and technically demanding, particularly for applications containing large or complex biological sequences. Errors in sequence data, formatting, numbering, or required annotations can lead to additional review, filing delays, or the need to correct and resubmit listings. Managing ST.25 and ST.26 requirements across different applications and filing scenarios can further increase the complexity of the process.
Trexo converts raw or existing biological sequence data into structured, quality-checked sequence listings prepared according to applicable WIPO ST.25 or ST.26 requirements. Our service includes sequence identification and organization, sequence-list generation, numbering and normalization, annotation and qualifier preparation, validation and quality checks, ST.25-to-ST.26 conversion support, ST.26 XML preparation, and review of sequence-listing errors and deficiencies. We deliver accurate, properly formatted, filing-ready sequence listings while reducing the time and effort required for preparation and review.
Key capabilities
WIPO ST.25 and ST.26 sequence-list preparation
ST.25 to ST.26 sequence-list conversion
Sequence processing and identification
XML generation and validation
Complex sequence-data support
THE OUTCOME
What Sequence Listing Preparation (ST.26) changes
Efficient turnaround
Greater internal team scalability
Reliable sequence accuracy
ST.26 compliance confidence
Who it’s for
- IP law firms
- Corporate IP teams
- Paralegal teams
- IP operations teams
- Research organizations
- Life sciences companies
- Licensing and business development teams
COMMONLY ASKED QUESTIONS
About Sequence Listing Preparation (ST.26)
Can you convert an ST.25 sequence listing to ST.26?
Yes. We can support conversion of legacy ST.25 sequence listings into ST.26-compatible XML and identify information that may require review or additional input.
Can you validate an ST.26 sequence listing?
Yes. Sequence listings can be reviewed and validated against applicable ST.26 requirements before delivery.
What types of sequences can be included?
The service can support qualifying nucleotide and amino acid sequences, subject to the applicable WIPO requirements.
Can you work from FASTA files?
Yes. FASTA and other suitable source files can be processed as part of the sequence-listing preparation workflow.
Do you provide the final XML file for ST.26?
Yes, where ST.26 XML is the applicable deliverable, the sequence listing can be prepared in the required XML format.
Why should I use a specialist sequence-listing service?
Specialist preparation can reduce manual work, improve consistency, identify potential sequence-listing issues earlier, and help patent teams focus on substantive patent drafting and prosecution.
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