It is often noticed that inventors only discover after grant that their names are missing on the patent certificate or in the Register. Equally common are disputes within teams about who deserves to be named. In the Indian system, the route to correct, add, or contest inventorship attribution is Form 8, the Request or Claim regarding mention of inventor as such in a patent. This article explains how Form 8 operates under the Patents Act, 1970, the time limits that can make or break a request, the exact procedure the Controller follows, and pragmatic tips for applicants and inventors.
Legal foundation, scope and what Form 8 actually does
Under Section 28 of the Patents Act, 1970, the Controller may ensure that the true inventor of an invention, or of a substantial part of it, is mentioned as such in the patent, the complete specification and the Register. Importantly, the proviso states that such mention does not create or take away proprietary rights in the patent. This is about correct attribution, not ownership.
The Patents Rules, 2003 operationalise Section 28 through Rules 66 to 70A. They specify that Form 8 is the vehicle for three different scenarios: a request by the applicant with the inventor, a claim by a person seeking mention, and an application to delete a wrongly mentioned inventor through a Controller’s certificate.
Who may file, and when the clock stops
There are three distinct pathways under Section 28, all using Form 8:
Section 28(2), request by the applicant or jointly by the applicant and the person to be mentioned as inventor.
Section 28(3), a claim by any other person who believes they should be mentioned as an inventor.
Section 28(7), an application to delete a person wrongly mentioned as inventor, which may be made at any time.
The crucial limit lies in Section 28(4), which requires that a request or claim under sub-sections (2) or (3) be made before grant. In practice, this makes it vital to check inventorship well before the grant stage. Post-grant, deletion of a wrongly named inventor remains possible under sub-section (7), but addition of a new inventor is not available through Section 28 once the patent is granted.
The prescribed forms and the Controller’s procedure
The Rules break the process down clearly:
Rule 66, a request under Section 28(2) shall be made in Form 8.
Rule 67, a claim under Section 28(3) shall be made in Form 8, accompanied by a statement of circumstances, and a copy is served on the applicant and other interested persons.
Rule 68, an application under Section 28(7) shall be made in Form 8, again with a statement of circumstances and service on interested persons.
Rule 69, the hearing procedure for Section 28 matters borrows the opposition machinery, for example written statements, reply, evidence, hearing, and costs.
Rule 70, the format of the mention of the inventor is prescribed for inclusion in the relevant documents.
Rule 70A, the inventor may separately request a Certificate of Inventorship in Form 8A once the patent is in force.
The official Form 8 template, hosted by IP India, underlines that it is the “Request or claim regarding mention of inventor as such in a patent” and points to Sections 28(2), 28(3), 28(7) read with Rules 66, 67, 68.
Relationship with Form 5 and why attribution still matters
Form 5, the Declaration as to Inventorship, is ordinarily filed with the complete specification or within the prescribed time. However, projects evolve and teams change. If, before grant, it emerges that the inventorship list requires correction, Form 8 is the statutory pathway to request or claim correct mention under Section 28. After grant, only deletion of a wrongly named inventor is available via Section 28(7), and an inventor may also seek a Certificate of Inventorship on Form 8A for recognition. Attribution matters for academic credit, funding records and professional reputation, even though the statute is explicit that mention does not alter patent ownership.
Step-by-step: drafting and filing Form 8 effectively
1) Choose the right route
If you are the applicant aligning the list with the true inventors, use Section 28(2).
If you are an inventor left out, file a claim under Section 28(3).
If an inventor has been wrongly included, proceed under Section 28(7) for a Controller’s certificate to delete the name.
2) Prepare a focused statement and evidence
Map each claimed contribution to at least one claimed feature in the specification.
Include lab notebooks, dated drafts, emails with concept development, or declarations explaining conception.
Avoid generic descriptions of “assistance” or “execution”; Indian practice treats conception and contribution to claimed subject matter as the touchstone for inventorship. Practitioner commentary frequently adopts this claim-based approach.
3) File Form 8 with the prescribed fee and serve copies
Use the current Forms and Fees list on IP India to confirm the applicable fee heads for Form 8 and, where needed, Form 8A.
4) Engage with the hearing process
Under Rule 69, Section 28 proceedings follow opposition-style procedure, including written statements, reply evidence, and a hearing with a speaking order. Be concise, use a short note of arguments, and highlight the rule-based limits, for example the pre-grant bar in Section 28(4).
Practical scenarios and how they are handled
Adding an omitted co-inventor before grant
If an individual contributed to a substantial part of at least one claim but was omitted, file Form 8 before grant either jointly with the applicant under Section 28(2) or by the individual under Section 28(3). The Controller circulates the claim, invites responses, and after hearing, directs correction if satisfied. The mention appears in the complete specification and the Register.Deleting a wrongly named person after grant
If a person was credited despite not contributing to the conception of the claimed invention, an application under Section 28(7) can be made at any time using Form 8. If allowed, the Controller issues a certificate and rectifies the specification and the Register.Certificate of Inventorship for recognition
Independent of the above, an inventor may request a Certificate of Inventorship on Form 8A while the patent remains in force. This is often used for HR records, appraisals or academic portfolios.FAQs, integrated within the flow
Does being named as inventor give me ownership of the patent?
No. Section 28(1) proviso is categorical that mention of the inventor does not confer or derogate from any rights under the patent. Ownership flows from assignment, law or contract, not from the Section 28 mention.Is it possible to add a new inventor after the patent is granted?
Section 28 requires that a request or claim to be mentioned as inventor be made before grant. Post-grant, Section 28(7) enables deletion of a wrongly mentioned inventor, not addition. If a serious attribution error surfaces only after grant, parties typically consider contractual resolution, or in limited circumstances, amendment paths that do not squarely fall within Section 28.What evidence persuades the Controller?
Documents showing conception and contribution to claimed elements are most persuasive, for example dated invention disclosure forms, comparative drafts of claims, experiment records and explanatory declarations that link each contribution to claim language. Commentary in Indian practice consistently stresses claim-level mapping.Will the patent certificate automatically show inventor names?
Often the grant certificate shows the applicant’s name, and the inventor names are reflected in the Register and specification. Where an inventor wishes a specific mention on the certificate, practice notes indicate that the Office may ask for Form 8 with the prescribed fee. A separate Form 8A certificate is also available.Common pitfalls and how to avoid them
Waiting till grant. Section 28(4) bars pre-grant requests or claims after grant. Audit inventorship early, ideally at complete specification stage, and file Form 8 as soon as the issue is noticed.
Equating contribution to effort rather than conception. Managerial oversight, funding or implementation work does not by itself make one an inventor unless it translates into claimed inventive contribution. Use claim charts to demonstrate the link.
Poorly served documents. Rules require service on applicants and interested persons. Maintain proof of service to avoid procedural challenges.
Confusing ownership with attribution. Even a successful Form 8 outcome does not shift proprietorship. Handle ownership through assignment and contracts.
Skipping the certificate route. For recognition needs after grant, consider Form 8A for a Certificate of Inventorship.
Applicant and inventor takeaways
Build inventorship assessment into your internal patenting checklist. Cross-check Form 5, claim language and project records before grant.
Where a team member’s inclusion is contested, use Form 8 with a tight, evidence-backed statement and request a hearing to put the factual matrix on record. The Controller’s decision, under Rule 69, follows a hearing-based, speaking-order model akin to opposition proceedings, which rewards precise pleadings.
Separate recognition from ownership. Use Section 28 and Form 8/8A for attribution, and manage ownership through agreements.
Always refer to the latest Forms and Fees from IP India before filing.
A disciplined approach to inventorship, with timely use of Form 8, prevents downstream disputes, preserves team morale and ensures that India’s patent records credit those who truly conceived the invention, without disturbing proprietary rights.
