Hey there, great question—this is a super common scenario when publishing apps on behalf of clients, and app stores (like Apple’s App Store or Google Play) take intellectual property rights extremely seriously. Getting your documentation right upfront will save you from frustrating review delays or rejection. Here’s a step-by-step breakdown of what you need to do:

These are the most widely accepted forms of proof that app store teams will recognize:

• Official License Agreement: This is the gold standard. It should be a signed, written contract between the third-party IP owner (e.g., the brand, graphic creator) and either your client or your company (whichever is the authorized party for the app). The agreement must explicitly state permission to use the specific IP (brand names, logos, graphics, etc.) in the exact app you’re publishing, including details on usage scope and duration.
• Letter of Authorization (LOA): If a full license agreement feels overkill, a concise LOA works too. It needs to be on the third party’s official letterhead (if available), signed by an authorized representative, and clearly outline:
  • Their consent for your app to use their IP
  • The specific IP assets being authorized
  • The app’s name, bundle ID/package name, and target platforms
• Trademark/Copyright Assignment (if applicable): If the third party has transferred full or partial rights to the IP to your client (instead of just granting a license), you’ll need this formal assignment document to prove ownership.

Don’t leave room for ambiguity—make sure every piece of paperwork includes these:

• Clear identification of all three parties: Your developer account details, your client’s business info, and the third-party IP owner’s contact/legal details.
• A specific list of IP assets: Avoid vague language like “brand materials.” Instead, name exact items (e.g., “Acme Corp logo (version 2, RGB)”, “‘Acme Widgets’ brand name”). You can attach sample files of the IP for clarity.
• Explicit app-specific authorization: State that the permission applies only to the app you’re publishing (include its unique identifiers like bundle ID) to avoid any confusion about scope.
• Signature and date: The document must be signed by someone with the authority to grant IP rights on behalf of the third party, dated before you submit the app for review.

Once you have the paperwork ready, here’s how to get it in front of the right people:

• Use the app store’s built-in channels: Most major platforms (Apple, Google) have sections in their developer dashboards for legal disclosures or IP documentation. Upload your files here when you submit the app, or add a note in the review comments stating that you have authorization documents available upon request.
• Reach out directly to support teams: If there’s no dedicated upload spot, send an email to the app store’s developer support team. Include your app’s details, a brief explanation of your role (publishing on behalf of a client), and attach the full authorization documents. A simple subject line like “IP Authorization for [App Name] (Bundle ID: XXXX)” will help them prioritize your request.
• Share copies with stakeholders: Make sure your client has a backup of all documents, and keep a secure copy in your own records—you might need to reference it again if the app store follows up with additional questions later.

• Get the paperwork sorted early: Don’t wait until you’re ready to submit the app to reach out to the third party for authorization. Rushing can lead to incomplete or incorrect documents that delay review.
• Use PDF format: Convert all documents to PDF to ensure signatures, logos, and text remain clear and unalterable.
• Match language to the platform: If you’re publishing to international app stores, provide an English version of the documents (or an official translated copy) even if the original is in another language.
• Stick to the authorized IP: Don’t modify the third-party IP (e.g., resizing logos, changing brand colors) beyond what’s allowed in the authorization document—even small changes can trigger a rejection.

内容的提问来源于stack exchange，提问作者Charlie Callahan