{"id":764,"date":"2026-04-11T18:59:53","date_gmt":"2026-04-11T13:29:53","guid":{"rendered":"https:\/\/tmzon.com\/blog\/?p=764"},"modified":"2026-04-11T18:59:54","modified_gmt":"2026-04-11T13:29:54","slug":"how-to-file-patent-india","status":"publish","type":"post","link":"https:\/\/tmzon.com\/blog\/how-to-file-patent-india\/","title":{"rendered":"How to File a Patent in India \u2014 Step-by-Step Guide (2026)"},"content":{"rendered":"\n<p>You have invented something new. Something that works, solves a problem, and does something no existing product or process does quite the same way. Now you want to protect it before you show it to anyone \u2014 a manufacturer, an investor, or the market.<\/p>\n\n\n\n<p>Filing a patent in India is the right instinct. But the patent filing procedure is one of the most technically demanding processes in <a href=\"https:\/\/ipindia.gov.in\/\" data-type=\"link\" data-id=\"https:\/\/ipindia.gov.in\/\" target=\"_blank\" rel=\"noopener\">Indian IP law<\/a>. The specification alone \u2014 the document that defines exactly what your invention is and what protection you are claiming \u2014 can take weeks to draft correctly, and an error at that stage cannot always be corrected later.<\/p>\n\n\n\n<p>This guide explains the full procedure step by step \u2014 who can file, which forms to use, what the fees are, every critical deadline, and what happens from filing to grant. By the end you will know exactly what is involved and where professional help is non-negotiable.<\/p>\n\n\n<style>.kb-table-of-content-nav.kb-table-of-content-id764_da56a4-18 .kb-table-of-content-wrap{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kb-table-of-content-nav.kb-table-of-content-id764_da56a4-18 .kb-table-of-contents-title-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id764_da56a4-18 .kb-table-of-contents-title{font-weight:regular;font-style:normal;}.kb-table-of-content-nav.kb-table-of-content-id764_da56a4-18 .kb-table-of-content-wrap .kb-table-of-content-list{font-weight:regular;font-style:normal;margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-right:0px;margin-bottom:0px;margin-left:0px;}<\/style>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Who Can File a Patent Application in India?<\/h2>\n\n\n\n<p>Under Section 6 of the Patents Act, 1970, a patent application can be filed by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The true and first inventor<\/strong> of the invention<\/li>\n\n\n\n<li><strong>An assignee<\/strong> of the inventor \u2014 a company or individual to whom the inventor has assigned the rights<\/li>\n\n\n\n<li><strong>The legal representative<\/strong> of a deceased inventor or assignee<\/li>\n<\/ul>\n\n\n\n<p>Applications can be filed individually or jointly by multiple applicants. A company can file a patent application if the inventor has assigned the rights to it \u2014 which is standard practice for employee inventions under employment agreements.<\/p>\n\n\n\n<p>Foreign applicants can also file for patent protection in India \u2014 either directly under the Patents Act or through the international Patent Cooperation Treaty (PCT) route. A registered patent agent in India is required for foreign applicants.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">What Can Be Patented in India?<\/h2>\n\n\n\n<p>Before spending time and money on a patent application, confirm that your invention is actually patentable under Indian law.<\/p>\n\n\n\n<p>Under Section 2(1)(j) of the Patents Act, 1970, an invention must satisfy three conditions:<\/p>\n\n\n\n<p><strong>Novelty<\/strong> \u2014 the invention must be new. It must not have been disclosed anywhere in the world \u2014 in any publication, patent, product, or public use \u2014 before the filing date. This is why confidentiality before filing is critical. Even a conference presentation, a social media post, or a conversation with a supplier without an NDA can destroy novelty.<\/p>\n\n\n\n<p><strong>Inventive step<\/strong> \u2014 the invention must not be obvious. It must involve a technical advancement or economic significance that would not be obvious to a person skilled in the relevant field. Something that is a routine or predictable modification of existing knowledge does not qualify.<\/p>\n\n\n\n<p><strong>Industrial applicability<\/strong> \u2014 the invention must be capable of being made or used in some kind of industry. It must have a practical application \u2014 not be purely theoretical.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Cannot Be Patented in India<\/h3>\n\n\n\n<p>Section 3 of the Patents Act, 1970 lists inventions that are not patentable in India regardless of how novel they are. The most commonly relevant exclusions are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pure software and computer programs as such<\/strong> \u2014 Section 3(k). Code and algorithms alone are not patentable. However, a software-hardware combination that produces a specific technical effect may qualify.<\/li>\n\n\n\n<li><strong>Business methods and mathematical methods<\/strong> \u2014 Section 3(k). Business models, financial processes, and mathematical formulas are excluded.<\/li>\n\n\n\n<li><strong>Discoveries<\/strong> \u2014 Section 3(d) and 3(e). Discovering a new property of a known substance, or a new form of a known substance without enhanced efficacy, is not patentable. This is particularly important in pharmaceuticals.<\/li>\n\n\n\n<li><strong>Mere new use of a known substance<\/strong> \u2014 Section 3(d). Finding a new use for an existing drug compound without proving enhanced therapeutic efficacy does not qualify.<\/li>\n\n\n\n<li><strong>Plants and animals<\/strong> \u2014 Section 3(j). Biological organisms in their natural state are excluded, except microorganisms.<\/li>\n\n\n\n<li><strong>Medical treatment methods<\/strong> \u2014 Section 3(i). Methods of treating humans or animals are not patentable, though medical devices and diagnostic instruments can be.<\/li>\n\n\n\n<li><strong>Atomic energy inventions<\/strong> \u2014 Section 4 in conjunction with the Atomic Energy Act, 1962.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1 \u2014 Conduct a Prior Art Search<\/h2>\n\n\n\n<p>Before drafting or filing anything, conduct a thorough prior art search to determine whether your invention is genuinely novel.<\/p>\n\n\n\n<p>Prior art is any publicly available information \u2014 published patents, academic papers, products, public demonstrations, or prior uses anywhere in the world \u2014 that existed before your filing date. If your invention is already disclosed in any prior art, it lacks novelty and cannot be patented.<\/p>\n\n\n\n<p><strong>Where to search:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Indian Patent Office database<\/strong> at ipindia.gov.in \u2014 searchable by keyword, inventor name, and classification<\/li>\n\n\n\n<li><strong>Google Patents<\/strong> \u2014 comprehensive global patent database<\/li>\n\n\n\n<li><strong>Espacenet<\/strong> \u2014 the European Patent Office&#8217;s global patent search database<\/li>\n\n\n\n<li><strong>US Patent and Trademark Office (USPTO)<\/strong> database at patents.google.com<\/li>\n\n\n\n<li><strong>WIPO PATENTSCOPE<\/strong> \u2014 for international PCT applications<\/li>\n<\/ul>\n\n\n\n<p>A prior art search is not a luxury \u2014 it is the foundation of everything that follows. A professional prior art search and patentability opinion from a registered patent agent before filing can save significant time and expense.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2 \u2014 Decide Between Provisional and Complete Application<\/h2>\n\n\n\n<p>This is one of the most important strategic decisions in the patent filing process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Provisional Application<\/h3>\n\n\n\n<p>A provisional application under Section 9 of the Patents Act, 1970 allows you to secure a <strong>priority date<\/strong> \u2014 your legal filing date \u2014 before your invention is fully developed.<\/p>\n\n\n\n<p><strong>Benefits:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Secures your priority date immediately, before anyone else can file a similar invention<\/li>\n\n\n\n<li>Gives you 12 months to develop and refine the invention before filing the complete specification<\/li>\n\n\n\n<li>Allows you to use the phrase &#8220;patent pending&#8221; in your disclosures and investor discussions<\/li>\n\n\n\n<li>Lower government fee than a complete application<\/li>\n<\/ul>\n\n\n\n<p><strong>What it must contain:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Title of the invention<\/li>\n\n\n\n<li>Description of the invention \u2014 enough to enable a person skilled in the field to understand what you have invented<\/li>\n\n\n\n<li>Best method of working the invention, to the extent known at the time of filing<\/li>\n\n\n\n<li>Drawings (not mandatory but strongly recommended where applicable)<\/li>\n<\/ul>\n\n\n\n<p><strong>Critical rule:<\/strong> A complete specification must be filed within <strong>12 months<\/strong> of the provisional application. If not filed within 12 months, the application is deemed abandoned under Section 9(1) of the Act. There is no extension.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Complete Application<\/h3>\n\n\n\n<p>A complete application under Section 10 of the Patents Act, 1970 is the full patent application containing all required elements. You can file a complete application directly \u2014 without a provisional \u2014 if your invention is fully developed.<\/p>\n\n\n\n<p><strong>A complete specification must contain:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Title of the invention<\/li>\n\n\n\n<li>Field of the invention<\/li>\n\n\n\n<li>Background \u2014 a description of the prior art and the problem your invention solves<\/li>\n\n\n\n<li>Summary of the invention<\/li>\n\n\n\n<li>Detailed description \u2014 a full, enabling disclosure sufficient for a person skilled in the field to reproduce the invention<\/li>\n\n\n\n<li>Claims \u2014 the legally operative part of the patent. Claims define the exact scope of protection you are seeking. Drafting claims is the most technically and legally complex part of the entire application.<\/li>\n\n\n\n<li>Abstract \u2014 a brief summary of the invention<\/li>\n\n\n\n<li>Drawings \u2014 where applicable<\/li>\n\n\n\n<li>Sequence listing \u2014 for biological inventions<\/li>\n<\/ul>\n\n\n\n<p><strong>The claims are the heart of every patent.<\/strong> Everything else in the specification supports the claims. Poorly drafted claims either fail to cover what you actually invented, or are drafted so broadly that they fail the novelty or inventive step test and are rejected by the examiner. Claims drafting is a specialist skill \u2014 it is the single most important reason to work with a registered patent agent or attorney.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3 \u2014 Determine the Correct Patent Office<\/h2>\n\n\n\n<p>India has four patent office locations. Your application must be filed with the office having jurisdiction over your residence, domicile, or principal place of business:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Location<\/th><th>Jurisdiction<\/th><\/tr><\/thead><tbody><tr><td><strong>Mumbai<\/strong><\/td><td>Maharashtra, Gujarat, Madhya Pradesh, Goa, and Union Territories of Daman &amp; Diu and Dadra &amp; Nagar Haveli<\/td><\/tr><tr><td><strong>Delhi<\/strong><\/td><td>Delhi, Haryana, Himachal Pradesh, Jammu &amp; Kashmir, Punjab, Rajasthan, Uttar Pradesh, Uttarakhand, and Chandigarh<\/td><\/tr><tr><td><strong>Chennai<\/strong><\/td><td>Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, Telangana, and Union Territories of Puducherry and Lakshadweep<\/td><\/tr><tr><td><strong>Kolkata<\/strong><\/td><td>All other states and Union Territories including Bihar, Jharkhand, Odisha, West Bengal, Northeast states<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Applications can be filed online through the IP India e-filing portal at ipindiaonline.gov.in or physically at the appropriate office.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4 \u2014 Prepare and File the Application (Forms and Fees)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Required Forms<\/h3>\n\n\n\n<p><strong>Form 1<\/strong> \u2014 Application for Grant of Patent. This is the primary application form containing applicant details, inventor details, title of the invention, and the type of application (provisional or complete).<\/p>\n\n\n\n<p><strong>Form 2<\/strong> \u2014 The Provisional or Complete Specification. This is the technical document \u2014 the actual disclosure of your invention. It is filed separately from Form 1 but submitted together.<\/p>\n\n\n\n<p><strong>Form 3<\/strong> \u2014 Statement and Undertaking regarding foreign applications. If you have filed or intend to file a corresponding patent application in any other country, you must disclose this and undertake to keep the Indian Patent Office informed. Must be filed within six months of the Indian application date.<\/p>\n\n\n\n<p><strong>Form 5<\/strong> \u2014 Declaration as to Inventorship. Filed with every complete specification to identify the true and first inventors.<\/p>\n\n\n\n<p><strong>Form 26<\/strong> \u2014 Power of Authority. Required if the application is filed through a registered patent agent. Authorises the agent to act on behalf of the applicant.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Government Fees (e-filing, 2026)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Applicant Type<\/th><th>Provisional Application<\/th><th>Complete Application<\/th><\/tr><\/thead><tbody><tr><td>Natural person \/ startup \/ small entity<\/td><td>\u20b91,600<\/td><td>\u20b91,600<\/td><\/tr><tr><td>Others (companies, large entities)<\/td><td>\u20b94,000<\/td><td>\u20b94,000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Additional fees apply for excess claims (beyond 10 claims), excess pages of specification (beyond 30 pages), and for each additional sheet of drawings.<\/p>\n\n\n\n<p><strong>Important:<\/strong> Startups recognised by DPIIT may be eligible for fee concessions under the SIPP (Startup Intellectual Property Protection) scheme, under which the Central Government bears the professional fees of an empanelled IP facilitator. The startup pays only the government fees.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5 \u2014 Publication of the Application<\/h2>\n\n\n\n<p>After filing, the patent application is <strong>automatically published<\/strong> in the Official Patent Journal 18 months from the filing date or priority date \u2014 whichever is earlier.<\/p>\n\n\n\n<p>If you need the application published earlier \u2014 for example, to use it as evidence of priority in a commercial transaction or licensing negotiation \u2014 you can file a <strong>Request for Early Publication<\/strong> using <strong>Form 9<\/strong> along with the prescribed fee. Early publication typically occurs within one month of the request.<\/p>\n\n\n\n<p>After publication, the invention is in the public domain. Third parties can view your application. They cannot oppose it at this stage \u2014 opposition happens later if granted.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 6 \u2014 File a Request for Examination (Form 18)<\/h2>\n\n\n\n<p>Publication alone does not trigger examination. You must separately request examination by filing <strong>Form 18<\/strong> \u2014 Request for Examination.<\/p>\n\n\n\n<p><strong>Deadline for filing Form 18:<\/strong><\/p>\n\n\n\n<p>For applications filed on or after 15 March 2024 (under the amended Patents Rules), the Request for Examination must be filed within <strong>31 months<\/strong> from the filing date or priority date.<\/p>\n\n\n\n<p>For applications filed before 15 March 2024, the deadline was 48 months.<\/p>\n\n\n\n<p><strong>If Form 18 is not filed within the deadline, the application is deemed abandoned.<\/strong> This is one of the most common reasons patent applications lapse in India \u2014 the applicant files the application, publishes it, and then misses the examination request deadline.<\/p>\n\n\n\n<p>For urgent matters, an <strong>Expedited Examination<\/strong> request can be filed using <strong>Form 18A<\/strong> \u2014 available to startups, small entities, and applicants where India is the international searching or preliminary examining authority for PCT applications. Expedited examination significantly reduces the wait time before an examination report is issued.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 7 \u2014 Examination and First Examination Report (FER)<\/h2>\n\n\n\n<p>Once the Request for Examination is filed, a patent examiner at the Indian Patent Office reviews the application. The examiner assesses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Whether the invention meets the patentability criteria \u2014 novelty, inventive step, industrial applicability<\/li>\n\n\n\n<li>Whether the specification discloses the invention fully and clearly<\/li>\n\n\n\n<li>Whether the claims are clear, supported by the specification, and fairly based on the disclosure<\/li>\n\n\n\n<li>Whether any Section 3 or Section 4 exclusions apply<\/li>\n\n\n\n<li>Whether unity of invention is satisfied \u2014 all claims must relate to a single inventive concept<\/li>\n<\/ul>\n\n\n\n<p>The examiner then issues a <strong>First Examination Report (FER)<\/strong> \u2014 a formal document setting out any objections to the application.<\/p>\n\n\n\n<p>The FER is the patent equivalent of a trademark examination report. It must be responded to within the prescribed time with legal arguments, amendments to claims, and any supporting evidence.<\/p>\n\n\n\n<p><strong>Response deadline:<\/strong> Under the Patents Rules, 2003 (as amended), the applicant has <strong>12 months<\/strong> from the date of the FER to put the application in order for grant. All objections must be overcome within this period.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 8 \u2014 Response to the First Examination Report<\/h2>\n\n\n\n<p>Responding to the FER requires:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Addressing every objection raised \u2014 novelty, inventive step, clarity of claims, sufficiency of disclosure, or Section 3 exclusions<\/li>\n\n\n\n<li>Amending claims where necessary \u2014 narrowing or restructuring claims to overcome prior art objections while preserving meaningful scope of protection<\/li>\n\n\n\n<li>Providing arguments supported by case law, technical literature, or expert evidence where applicable<\/li>\n\n\n\n<li>Filing amended drawings or descriptions if required<\/li>\n<\/ul>\n\n\n\n<p>A hearing may be requested if the examiner is not satisfied with the written response. At the hearing, oral arguments are presented before the Controller.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 9 \u2014 Grant of Patent<\/h2>\n\n\n\n<p>If all objections are overcome, the Controller orders the grant of the patent. The patent is then published in the Patent Journal.<\/p>\n\n\n\n<p>A <strong>Patent Grant Certificate<\/strong> is issued within seven days of the grant order.<\/p>\n\n\n\n<p>From the grant date, the patent owner has the exclusive right to make, use, sell, import, or license the invention in India for the remaining term of the patent.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Patent Term<\/h3>\n\n\n\n<p>A patent in India is valid for <strong>20 years from the date of filing<\/strong> the application \u2014 not from the date of grant. Annual renewal fees must be paid from the end of the second year to keep the patent in force.<\/p>\n\n\n\n<p>If renewal fees are not paid, the patent lapses and the invention enters the public domain.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Step 10 \u2014 Renewal Fees<\/h2>\n\n\n\n<p>A granted patent must be maintained by paying <strong>annual renewal fees<\/strong> (called &#8220;maintenance fees&#8221; in some jurisdictions). In India, renewal fees are payable at the expiration of the second year from the date of the patent and each subsequent year.<\/p>\n\n\n\n<p>Renewal fee schedules are available on the IP India website. The fees increase progressively over the 20-year patent term.<\/p>\n\n\n\n<p>If renewal fees are not paid on time, there is a six-month grace period during which the patent can be restored on payment of the arrears plus a surcharge. After the grace period, the patent lapses permanently.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">How Long Does It Take?<\/h2>\n\n\n\n<p>The Indian Patent Office has significantly improved processing times, but filing to grant still typically takes several years:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Stage<\/th><th>Approximate Timeline<\/th><\/tr><\/thead><tbody><tr><td>Filing to publication<\/td><td>18 months (automatic)<\/td><\/tr><tr><td>Publication to examination (if Form 18 filed promptly)<\/td><td>6 months to 2 years depending on technology area<\/td><\/tr><tr><td>FER issued to grant<\/td><td>1 to 3 years depending on complexity of objections<\/td><\/tr><tr><td><strong>Total: filing to grant<\/strong><\/td><td><strong>3 to 6 years<\/strong> in most cases<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Expedited examination under Form 18A can compress this timeline significantly for eligible applicants.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Do You Need a Patent Agent?<\/h2>\n\n\n\n<p>Technically no \u2014 an inventor can file and prosecute a patent application in India themselves. But practically, for anyone who wants meaningful, enforceable patent protection, professional assistance is not optional \u2014 it is essential.<\/p>\n\n\n\n<p>The reason is the specification and claims. A poorly drafted specification that fails to disclose the invention fully and clearly cannot be corrected after filing in many cases. A set of claims that are too narrow protects nothing \u2014 a competitor can simply design around them. Claims that are too broad will be rejected or invalidated. Drafting claims that are precisely scoped to cover the commercial embodiment of the invention while surviving examination is a specialist skill.<\/p>\n\n\n\n<p>Professional fees for drafting and filing a complete patent specification in India range from approximately \u20b925,000 to over \u20b91,00,000 depending on the complexity of the invention. This is an investment \u2014 not a cost. A patent that is not properly drafted is not worth the paper it is written on.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<p><strong>Q: What is the difference between a provisional and complete patent application in India?<\/strong><\/p>\n\n\n\n<p>A: A provisional patent application under Section 9 of the Patents Act, 1970 secures a priority date before the invention is fully developed. It does not contain formal claims and cannot itself result in a granted patent. A complete specification containing claims must be filed within 12 months of the provisional or the application is abandoned. A complete application filed directly contains the full specification and claims and is the application that proceeds through examination to grant.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: How much does it cost to file a patent in India?<\/strong><\/p>\n\n\n\n<p>A: Government fees for e-filing are \u20b91,600 per application for natural persons, startups, and small entities, and \u20b94,000 for companies and other large entities. These are base fees \u2014 additional charges apply for excess claims and pages. Professional fees for drafting and filing the complete specification typically range from \u20b925,000 to over \u20b91,00,000 depending on complexity. Startups registered with DPIIT may be eligible for the SIPP scheme under which the government covers professional fees.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: How long does a patent last in India?<\/strong><\/p>\n\n\n\n<p>A: A patent in India is valid for 20 years from the date of filing the application, not from the date of grant, under Section 53 of the Patents Act, 1970. Annual renewal fees must be paid from the end of the second year. If renewal fees lapse, the patent can be restored within six months on payment of arrears and a surcharge \u2014 after which it lapses permanently.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: Can software be patented in India?<\/strong><\/p>\n\n\n\n<p>A: Pure software \u2014 computer programs as such \u2014 is excluded from patentability under Section 3(k) of the Patents Act, 1970. However, a software-implemented invention that produces a specific technical effect, particularly when integrated with hardware, may qualify. This is a nuanced area and requires advice from a specialist patent attorney before filing.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: What happens if I publicly disclose my invention before filing?<\/strong><\/p>\n\n\n\n<p>A: Public disclosure before filing destroys novelty and generally prevents patentability, since the invention is no longer new. India does not have a grace period for inventor disclosure in most cases. The exception is that disclosure at a recognised international exhibition under Section 31 of the Patents Act or during a learned society paper with prior notification to the Controller may not destroy novelty \u2014 but these are narrow exceptions. The safest approach is always to file before any public disclosure.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: What is Form 18 and why is it critical?<\/strong><\/p>\n\n\n\n<p>A: Form 18 is the Request for Examination under the Patents Act, 1970. After a patent application is filed and published, examination does not begin automatically \u2014 the applicant must file Form 18 to request it. For applications filed on or after 15 March 2024, Form 18 must be filed within 31 months of the filing or priority date. Missing this deadline results in the application being deemed abandoned \u2014 one of the most common reasons patent applications lapse in India.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Q: What is the PCT route for patent filing in India?<\/strong><\/p>\n\n\n\n<p>A: The Patent Cooperation Treaty (PCT) is an international treaty administered by WIPO that allows an inventor to file a single international patent application covering multiple countries simultaneously. An Indian patent application can be the basis for a PCT application designating other countries. Conversely, a PCT application designating India enters the national phase before the Indian Patent Office within 31 months of the priority date. The PCT route is advisable for inventors seeking protection in multiple countries simultaneously.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">A Note from Practice<\/h2>\n\n\n\n<p>Filing a patent is the beginning of a process, not the end of one. The priority date you secure on filing day is your most valuable asset \u2014 everything else can be developed, amended, and argued over the years that follow.<\/p>\n\n\n\n<p>The most common mistake is waiting too long to file. Inventors polish their invention for months, show it to potential investors under vague verbal confidentiality, present at a conference, or post about it online \u2014 and only then think about the patent. By that time, the novelty may already be compromised.<\/p>\n\n\n\n<p>File the provisional application first. Secure the date. Then develop the complete specification properly with professional help.<\/p>\n\n\n\n<p>If you are unsure whether your invention is patentable, or whether you need a patent, trademark, or copyright \u2014 or all three \u2014 start with a consultation.<\/p>\n\n\n\n<p><strong><a href=\"\/consultation\">Book a Free Consultation \u2192 Consultation &#8211; TMZON<\/a><\/strong><\/p>\n\n\n\n<p>For a primer on how patents compare to trademarks and copyright for your specific business:<\/p>\n\n\n\n<p><strong><a href=\"\/blog\/patent-vs-trademark-vs-copyright-india\/\">Patent vs Trademark vs Copyright in India \u2014 Which Do You Need? \u2192 Patent vs Trademark vs Copyright<\/a><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><em>This article is written for general informational purposes and does not constitute legal advice. For advice specific to your patent application, please consult a qualified patent attorney or registered patent agent.<\/em><\/p>\n\n\n\n<p><em>Written by Arya Sharma, Advocate, Bombay High Court | Trademark Attorney<\/em><\/p>\n\n\n\n<p><em>\u00a9 2026 TMZON Corporate Services. All rights reserved.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>You have invented something new. Something that works, solves a problem, and does something no existing product or process does quite the same way. Now you want to protect it before you show it to anyone \u2014 a manufacturer, an investor, or the market. Filing a patent in India is the right instinct. 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href=\"https:\/\/tmzon.com\/blog\/category\/intellectual-property\/\" rel=\"category tag\">Intellectual Property<\/a> <a href=\"https:\/\/tmzon.com\/blog\/category\/patent-registration\/\" rel=\"category tag\">Patent Registration<\/a> <a href=\"https:\/\/tmzon.com\/blog\/category\/startup-legal-basics\/\" rel=\"category tag\">Startup Legal Basics<\/a>","rttpg_excerpt":"You have invented something new. 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