The U.S. Patent Process, Step by Step

Getting a U.S. patent follows a predictable sequence: the invention is documented and an application is prepared, the application is filed with the USPTO, it is usually published about 18 months after the earliest filing date, it is examined, and if the examiner agrees that the claims are patentable, it is allowed and issues as a patent. Maintenance fees then keep it in force. The whole process commonly takes several years from first filing to issuance, and the timing varies widely by technology.

This overview walks through each stage and the decisions that come with it. Fees and timelines change, so specifics should be confirmed when you reach each step.

1. Documenting the invention

The process starts inside your company. Engineers describe what they built, the problem it solves, how it works, and what alternatives exist. This becomes the technical material your patent attorney or agent uses to prepare the application.

Two questions should be answered early. First, who contributed to the invention, and does the company own their rights through signed assignment agreements? Second, has the invention been publicly disclosed, sold, or offered for sale, or will it be soon? Timing affects what can be protected, particularly outside the United States.

2. Deciding whether to search

A prior art search before drafting is optional. It can help gauge whether an idea is likely to be patentable and inform how the claims are framed, but it costs time and money and no search is exhaustive. Many companies search for important inventions and skip it for others.

Separately, applicants and others involved in the application have a duty to disclose information they know of that is material to patentability (37 C.F.R. 1.56). Known references are typically submitted to the USPTO in an information disclosure statement.

3. Preparing the application

A non-provisional application includes a specification describing the invention in detail, drawings, and claims that define the legal scope of protection. Preparation usually involves an inventor interview, a first draft, and one or more review rounds with the inventors.

4. Filing: provisional or non-provisional

Applicants can begin with either type of application.

A provisional application is not examined on its own. It establishes a filing date, and a non-provisional application filed within 12 months can claim its benefit (35 U.S.C. 119(e)). If that deadline is missed unintentionally, a limited petition procedure may restore the benefit for a non-provisional filed within 14 months (37 C.F.R. 1.78), but it should not be relied on. The benefit extends only to what the provisional actually discloses. Whether it supports the later claims can be evaluated during examination of the non-provisional application, and again in litigation or a USPTO challenge, so a thin provisional can provide less protection than expected.

A non-provisional application is the application that is examined and can become a patent.

USPTO fees are reduced for applicants that qualify as small or micro entities, which covers many startups and individual inventors.

After filing, the USPTO issues a filing receipt. If the invention was made in the United States, a foreign filing license is generally required before filing abroad earlier than six months after the U.S. filing (35 U.S.C. 184). The filing receipt indicates whether a license has been granted. It usually is, but not in every case, and other requirements, such as export control rules, can also apply, so foreign filing plans should be confirmed with your practitioner.

5. Publication

Most applications are published about 18 months after the earliest filing date they claim (35 U.S.C. 122(b)). After publication, the application is public, including its full technical description. An applicant can request non-publication only at filing, and only by certifying that the invention has not been and will not be the subject of an application in another country, or under a multilateral agreement, that requires publication at 18 months. If the applicant later files such an application, the USPTO is to be notified within 45 days, or the application can be regarded as abandoned (35 U.S.C. 122(b)(2)(B)).

Publication can also give rise to provisional rights under 35 U.S.C. 154(d): a reasonable royalty for certain activity between publication and issuance. The conditions are specific, including that the issued claims be substantially identical to the published claims and that the infringer had actual notice of the published application.

6. Examination

The application waits in a queue for an examiner in the relevant technology area. The wait before the first review varies by technology and often exceeds a year. For an additional fee, prioritized examination programs can shorten the overall timeline considerably.

The examiner searches the prior art and evaluates the claims. The first substantive communication is usually an office action, which often rejects some or all claims. The applicant responds with arguments, amendments, or both, and the exchange continues until the claims are allowed, the application is appealed, or it is abandoned. If the application contains more than one invention, the examiner may first issue a restriction requirement asking the applicant to choose one, with the others available for separate divisional applications.

Interviews with the examiner are available throughout and often resolve issues faster than written exchanges alone. The prosecution article in this series covers this stage in more detail.

7. Allowance and the issue fee

When the examiner concludes that the claims are patentable, the USPTO issues a notice of allowance. The issue fee is due within three months, and that deadline cannot be extended.

This is also a common point to consider whether a continuation application is warranted. A continuation generally must be filed while the parent application, or a qualifying intermediate application, is still pending, so if additional claims from the same specification may be worth pursuing, the decision usually needs to be made before the patent issues.

8. Issuance and patent term

After the issue fee is paid, the patent issues, generally within weeks. Patent term generally runs 20 years from the earliest non-provisional filing date the patent relies on, and it may be extended by patent term adjustment for certain USPTO delays during examination.

9. Maintenance fees

To keep a U.S. utility patent in force, maintenance fees are due 3.5, 7.5, and 11.5 years after grant. Each fee can be paid without a surcharge during the six months before that date, and with a surcharge during a six-month grace period after it. A patent that lapses for non-payment loses its protection, so these dates should be docketed along with every other deadline.

International filing

U.S. patents protect only in the United States. If protection elsewhere may matter, foreign or international applications generally need to be filed within 12 months of the first filing to claim its priority. A Patent Cooperation Treaty (PCT) application is a common route that defers the decision about specific countries, typically until about 30 months from the earliest priority date, when national phase applications are filed in the countries chosen.

Public disclosure before filing can also limit rights in many countries that do not have a grace period comparable to the U.S. one, which is another reason to file before disclosing.

A practical takeaway

The patent process rewards planning at a few key points: before filing (ownership, disclosure timing, and filing type), at 12 months (non-provisional and foreign filing), during examination (how to respond to rejections), and at allowance (whether to file a continuation). Put those decision points on the calendar early, and ask your patent attorney or agent to flag each one as it approaches.