PerspireIP Blog
Expert perspectives on intellectual property strategy, patent law, trademark protection, and IP portfolio management from the PerspireIP team.
Patent cross-licensing lets two companies trade access to each other's patents instead of suing. Here is when it makes sense, where antitrust draws the line, and the clauses that decide who really wins.
Read MoreA patent invalidity opinion is the reasoned legal analysis that tells an accused infringer or IPR petitioner whether a patent will survive a challenge. Here is what belongs in one.
Read MoreUnity of invention decides whether one application can cover several inventions. Learn the single-inventive-concept test and how the PCT, EPO, and USPTO differ.
Read MoreDo provisional patent application drawings have to be formal? A practical guide to informal sketches, the 35 U.S.C. 113 rule, and the new-matter trap.
Read MorePATTSY WAVE is a capable docketing platform, but it isn't the only way to keep patent and trademark deadlines. Here's how to compare the real alternatives without betting the portfolio.
Read MoreA US-style application filed at the EPO without reworking rarely survives examination. Here are the seven rules that separate a European patent that grants from one that stalls.
Read MoreA practical, step-by-step tutorial for producing USPTO-ready figures in the free vector editor Inkscape — and an honest look at where do-it-yourself drawings still fall short.
Read MoreA buyer's guide for firm administrators: the seven capabilities that separate patent drawing software built for solo inventors from software that survives a busy prosecution docket.
Read MoreHow to run an IP portfolio assessment that survives scrutiny: the fee math that forces the decision, a scoring rubric, and what happens when you let a patent go.
Read MoreA vendor-neutral guide to choosing an IP management system: the seven features that actually matter, what it really costs, and where rollouts fail.
Read MoreA practical guide to shop rights: the employer's implied, royalty-free license to an employee invention, how it arises, and why it is a poor substitute for an assignment.
Read MoreA practical guide to the Bolar safe harbor under 35 USC 271(e)(1): what it protects, how far reasonably related reaches, and where the exemption runs out.
Read MoreA co-owner holding one percent of your patent has the same rights you do — including the right to license your competitor and keep the money. Here is what Section 262 really says.
Read MoreSell a patented product once, and your patent rights in that unit are gone — no matter what the label says. Here is what the Supreme Court actually held, and how to structure around it.
Read MoreA notice of opposition is not a lawsuit, but it can end your registration just as effectively. Here is how the proceeding actually runs.
Read MoreMost invalidity fights are won with evidence that never appears in a patent database. Here is how to find it, date it, and make it stick.
Read MoreA typo in an issued patent can quietly weaken a claim or break a priority chain. A certificate of correction is the low-cost fix — but only for the right kind of error, and only going forward. Here is what it can repair, what it cannot, the litigation trap that surprises owners, and five rules for using it well.
Read MoreOne claim can protect a whole family of alternatives — if you draft it the way the USPTO expects. This guide walks through the Markush format, the improper-grouping rejection that trips up chemical and biotech applications, election of species, and six practical rules for getting alternatives allowed.
Read MoreThe provisional patent deadline gives you 12 non-extendable months. Here's how the clock works, how to claim benefit, and how to restore priority if you slip.
Read MoreA buyer-side trademark due diligence checklist: how to verify chain of title, live status, renewals, licenses, and conflicts before you close on a brand.
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