PCT Divisional Application: 5 Essential Facts
A PCT divisional application does not exist in the international phase. Here is how unity of invention really works and when to split out inventions.
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IP Insights & Resources
Expert perspectives on intellectual property strategy, patent law, trademark protection, and IP portfolio management from the PerspireIP team.
Trademark Statement of Use: 6 Steps to Register Right
Your intent-to-use mark was allowed, not registered. The trademark statement of use is the final step that proves real use and turns allowance into a registration.
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Patent Continuation Application: 6 Proven Filing Tips
Your patent is about to grant, but you want broader claims or room to chase competitors. A patent continuation application keeps the door open. Here's how to use it.
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Divisional Patent Application: 7 Smart Rules to File
The examiner issued a restriction requirement and you elected one invention. A divisional patent application is how you keep the rest. Here are the rules that matter.
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Poor Mans Copyright: 5 Myths That Cost Creators
Mailing yourself a sealed copy of your work feels like cheap insurance. In court it is close to worthless. Here is what actually protects a creative work.
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Euro-PCT Regional Phase Entry: 6 Steps to the EPO
Taking a PCT application into Europe means one route, one office, and one unforgiving 31-month deadline. Here is exactly what the EPO needs and when.
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EPO Grant Procedure: 7 Steps After the Rule 71(3) Notice
Once the EPO signals it intends to grant, a non-extendable four-month clock starts. Miss it and the application is deemed withdrawn. Here is exactly what to do.
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Invention Assignment Agreement: 6 Rules You Must Know
Your company doesn't automatically own what your employees invent. An invention assignment agreement is what makes ownership stick, if you draft it correctly.
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Utility Model vs Patent: 7 Key Differences for 2026
A utility model can protect your product in months for a fraction of a patent's cost, but it comes with real trade-offs. Here is when each one wins.
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EPO Third-Party Observations: 6 Smart Rules for 2026
A competitor's European patent application is heading for grant. You don't have to wait for opposition. Here is how EPO third-party observations work, and how to use them well.
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Patent Grace Period: 6 Essential Rules for 2026
Disclosed your invention before filing? In the US you may still have time. Here is how the patent grace period works, where it fails, and how not to lose your rights.
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European Patent Validation: 6 Smart Steps for 2026
Grant is not the finish line in Europe. Here is how European patent validation works, the deadline you cannot miss, and how to keep translation costs under control.
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EPO Appeal Proceedings: 7 Essential Rules for 2026
An Examining Division refusal or an opposition loss is not the end. Here is how EPO appeal proceedings work, the deadlines that decide them, and how to win.
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EPO Divisional Application: 7 Costly Traps to Avoid
A practical guide to the EPO divisional application: the pending deadline under Rule 36, the current 2026 rules, the back-renewal cost trap, and the added-matter and double-patenting pitfalls.
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EPO Opposition Proceedings: 6 Proven Steps to Win
A practical guide to EPO opposition proceedings: the unforgiving 9-month deadline, the three grounds under Article 100 EPC, the procedure, costs, and how to build a winning case.
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Unitary Patent and the UPC: 7 Smart Choices for 2026
A practical, founder-facing guide to the Unitary Patent and the Unified Patent Court: deadlines, the single renewal fee, opt-out strategy, and when to choose it.
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Trademark Specimen of Use: 6 Rules to Avoid Refusal
What counts as an acceptable trademark specimen of use, the goods-versus-services divide, the USPTO crackdown on mocked-up specimens, and how to respond to a specimen refusal.
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Patent Subject Matter Eligibility: 2-Step Alice Test
A practitioner's guide to patent subject matter eligibility under 35 U.S.C. 101 and the two-step Alice/Mayo test, with eligible vs ineligible examples and drafting tactics that beat a 101 rejection.
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Intent-to-Use Trademark Application: 7 Smart Steps
A practitioner's walkthrough of the Section 1(b) intent-to-use application: when to choose it, the bona fide intent requirement, the Notice of Allowance and Statement of Use timeline, extensions, and the mistakes that kill filings.
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Certification Mark: 7 Smart Rules to Register One Right
What a certification mark is, how it differs from a trademark, and the rules for registering and keeping one at the USPTO.
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