Your work is yours. Other people's work is theirs.

1. Overview

This Copyright & Intellectual Property Policy explains how ownership, licensing, and infringement notices work on LinguaDig. It is part of our Terms of Service and is referenced by the upload consent flow before you submit any file, URL, or pasted text.

This page is version-stamped (2026-05-v1.0, effective 2026-05-05). Substantive changes ship as a new version.

2. Your content stays yours

You retain full ownership of any content you create or upload to LinguaDig \u2014 flashcards, essays, journal entries, recordings, highlights, notes, Learning Sources, and anything else. We do not claim a copyright interest in your content. You can export it any time (Profile \u2192 Export) and delete it any time (Profile \u2192 Reset or Delete account).

3. Our limited license

By uploading or creating content on LinguaDig, you grant us a limited, non-exclusive, non-sublicensable, royalty-free license to store, transmit, process, transcribe, summarise, analyse, and display that content solely to operate the Service for you. The license:

• Is personal to your account \u2014 we do not on-sell or sublicense your content.
• Ends when you delete the content or delete your account (within 30 days of deletion).
• Does not authorise us to use your content for advertising, training third-party AI models, or any purpose unrelated to running the Service for you, unless you opt-in explicitly (e.g. by sharing a passage publicly).

Public sharing surfaces (e.g. publishing a passage to the community library) require a second, separate consent captured at the share gate.

4. AI-generated output ownership

To the extent we hold any rights in AI output produced for you (corrections, summaries, generated passages, exercises, transcripts, model answers), we assign those rights to you for personal learning use. You may keep, export, and use that output for your own learning indefinitely.

Limits:

• You may not resell or sublicense AI output as a paid product or service.
• You may not represent AI output as professionally certified material (e.g. legal, medical, financial advice).
• AI output may incorporate facts and ideas that are not copyrightable in any jurisdiction; ownership applies only to the expressive form, not the underlying facts.
• If you publish AI output externally, label it as AI-generated where applicable (see §10 EU AI Act disclosures).

5. Prohibited uses (recap)

The full prohibited-content list lives in our Terms of Service §4. Most relevant to copyright/IP:

• Uploading copyright-protected material you do not own or have permission to use.
• Uploading content that infringes a third party's trademark, design, patent, or database right.
• Uploading content that violates a third party's right of publicity or moral rights.

By uploading, you warrant that you have all necessary rights, licences, consents, and permissions \u2014 see Terms §5.

6. DMCA \u00a7512 takedown procedure

LinguaDig qualifies as an online service provider under the US Digital Millennium Copyright Act (17 U.S.C. \u00a7512) and complies with its notice-and-takedown procedure. To submit a DMCA notice, send a written communication to our designated agent that includes all of the following elements required by 17 U.S.C. \u00a7512(c)(3):

1. A physical or electronic signature of a person authorised to act on behalf of the owner of an exclusive right that is allegedly infringed.
2. Identification of the copyrighted work claimed to have been infringed (or a representative list, if multiple works at a single site are covered by one notice).
3. Identification of the material that is claimed to be infringing or to be the subject of infringing activity, with information reasonably sufficient to permit us to locate it (e.g. the URL of the page or the LinguaDig row identifier).
4. Contact information: address, telephone number, and email address of the complaining party.
5. A good-faith statement that the complaining party has a good-faith belief that the use of the material in the manner complained of is not authorised by the copyright owner, its agent, or the law.
6. A statement, under penalty of perjury, that the information in the notice is accurate and that the complaining party is authorised to act on behalf of the owner of an exclusive right that is allegedly infringed.

Send your notice to our designated agent: dmca@linguadig.app, or use our online form for fastest processing:

Warning under \u00a7512(f): any person who knowingly materially misrepresents that material is infringing may be liable for damages, including costs and attorneys' fees, incurred by the alleged infringer or by us.

7. Counter-notice procedure

If your content was removed in response to a DMCA notice and you believe the removal was a mistake (for example, the content was authorised, the use is fair use, or the content was misidentified), you may file a counter-notice under DMCA \u00a7512(g)(3). The counter-notice must include:

1. Your physical or electronic signature.
2. Identification of the material that has been removed and the location at which it appeared before it was removed.
3. A statement under penalty of perjury that you have a good-faith belief the material was removed as a result of mistake or misidentification.
4. Your name, address, and telephone number, and a statement that you consent to the jurisdiction of the federal district court for the judicial district in which your address is located (or, if outside the US, of any judicial district in which we may be found), and that you will accept service of process from the original complainant or its agent.

Send your counter-notice to dmca@linguadig.app, or use our online form: File a counter-notice. On receipt of a valid counter-notice we will forward it to the original complainant; if they do not file a court action within 10 to 14 business days, we will reinstate the material per \u00a7512(g)(2)(C).

8. Repeat-infringer policy

In line with DMCA \u00a7512(i), accounts that receive three or more valid takedown notices within 12 months are subject to suspension or termination. We retain a cryptographic hash (not the content itself) of removed material to prevent the same content from being re-uploaded by the same or another account.

9. EU DSA Art. 16 illegal-content notice mechanism

Under the EU Digital Services Act (Regulation 2022/2065), any individual or entity may notify us of content they consider illegal under EU or member-state law (this is broader than copyright \u2014 it includes terrorist content, hate speech, CSAM, defamation, etc.). To submit a notice, email illegal-content@linguadig.app with:

• The exact location of the content (URL or LinguaDig row identifier).
• An explanation of why you consider it illegal, with references to the relevant law where possible.
• Your name and email (anonymous notices accepted for content involving Articles 3 to 7 of Directive 2011/93/EU).
• A good-faith declaration that the information is accurate and complete.

We acknowledge receipt without undue delay and notify both you and the uploader of our decision with a statement of reasons (DSA Art. 17). Member-state authorities should use the single-point-of-contact channel: eu-contact@linguadig.app (DSA Art. 11).

10. EU AI Act use-of-AI-system disclosures

Under EU Regulation 2024/1689 (the AI Act), Art. 50 obligations apply to providers and deployers of generative AI. LinguaDig is a deployer:

• Art. 50(2) machine-readable marking: AI-generated artefacts shared publicly via LinguaDig (community library passages, exported reels, generated audio) carry a "Generated by LinguaDig AI" attribution. Where the underlying provider supports content credentials (C2PA), we propagate them.
• Art. 50(3) deepfake disclosure: AI-generated voice clips that mimic an identifiable person are flagged as such on every playback surface; the voice-clone feature requires explicit consent under Art. 9 GDPR before any synthesis.
• Art. 50(4) AI-generated text: when AI-generated text is published on a topic of public interest, we display an "AI-generated" badge alongside the content.
• Art. 5 prohibited practices: we do not use AI for biometric categorisation of natural persons, social scoring, real-time remote biometric identification, or any other prohibited practice listed in Art. 5.

11. Takedown response SLA

We aim to acknowledge valid takedown notices within 24 hours of receipt and to action them (remove or refuse with reasons) within 72 hours. Time-zones, weekends, and notices that lack required elements may extend the response window; we will explain the delay in our acknowledgement.

Statement of reasons under DSA Art. 17 is provided to both the notifier and the uploader.

12. Designated agents & contacts

• DMCA designated agent (US): dmca@linguadig.app.
• DMCA counter-notice: dmca@linguadig.app.
• EU DSA Art. 16 illegal-content notices: illegal-content@linguadig.app.
• EU member-state authority single-point-of-contact (DSA Art. 11): eu-contact@linguadig.app.
• General questions: the in-app Support page.

Effective date: 2026-05-05 \u00b7 Version: 2026-05-v1.0