JeffOffice Trademark Policy

Effective November 3, 2026. Published at https://www.jeffoffice.com/trademarks.

JeffOffice LLC, a Michigan limited liability company ("we"), publishes JeffOffice, free software under the GNU General Public License version 3. The license lets you copy, change, and share the code. It does not give you rights in our names and logo. This policy says what you may do with them.

The marks covered

• Names: JeffOffice™, JeffPub™, JeffDeck™, JeffWrite™, and JeffCrunch™, which are in use, and JeffMail™ and JeffBase™, which we intend to use for apps to come.
• Logo and icons: the JeffOffice logo, its lockups, and the app icons. They are JeffOffice LLC's own work.

You may do these things without asking

1. Refer to the real software, truthfully. For example: "I made this flyer with JeffPub," "This guide covers JeffWrite," or "Download JeffOffice from the official site."
2. Link to us. You may link to www.jeffoffice.com and to the GitHub repository, with the name as the link text.
3. Say your product works with JeffOffice. For example: "Opens JeffDeck files" or "Exports to JeffCrunch workbooks." Say it plainly, in ordinary type, and do not use our logo.
4. Write about JeffOffice. News, reviews, tutorials, books, and videos may use the names to describe the software. Do not suggest we wrote, approved, or sponsor your work.
5. Share unmodified copies. You may share the official, unmodified installers and packages from our releases page under their names, with the license and notices intact.
6. Use the names as the License requires for notices and attribution, such as keeping "Copyright (c) 2026 JeffOffice LLC."

You need our written permission first

Write to info at jeffoffice dot com before you do any of these:

1. Distribute a modified build under any of the names (small changes such as packaging fixes count as modified unless you have our permission).
2. Use our logo or icons, in any size, on a website, a package, a store listing, a product, or a shirt.
3. Use the names in a domain name, social media handle, app store listing, company name, or product name, or in a name that looks or sounds like ours (for example "JeffOffice Pro," "JeffPub Plus," or "Jeff-Office").
4. Say or suggest that we endorse, sponsor, certify, or are affiliated with you or your product.
5. Sell support, training, or services under the names in a way that suggests you are the publisher. (Selling honest services for the software is fine. Say that you are independent.)

If you fork or modify the software

You have the right to fork. Under the Additional Terms to the license, a modified version must be marked as changed and not presented as the original. To follow this:

• Choose your own name and logo. Do not use ours, and do not use names or logos close to ours.
• Say in the About box, the installer, and the download page that your program is "based on JeffOffice" and is not the official version. You may say "based on JeffOffice" truthfully (rule 1 above).
• Change the app identifiers that tell programs apart: executable names, bundle and package identifiers, file association names, and the settings and registry keys. This keeps your build from replacing or mixing with the official one on a user's computer.
• Change or remove the statistics and crash-report address. The official apps send usage statistics and crash reports, when the user allows it, to a server address written in the code. A modified version must not send anything to our servers. This is also a term of the license (Additional Terms, term 2). We may refuse data from builds we did not make.
• Keep the copyright and license notices, and add your own.

Third-party marks

Other companies' names that appear in our documents, such as the names of file formats and fonts, belong to their owners. We use them only to describe compatibility. We are not affiliated with them. This policy does not give you rights in their marks.

Our right to act

We may ask you to stop a use that is likely to confuse people or that breaks this policy. We will try to ask politely first. Nothing here limits the rights we have under law.

Changes and contact

We may change this policy by posting a new version. Questions and permission requests: info at jeffoffice dot com.