Where do I set my company name?
in Xcode 4 GM seed:
in the navigation pane (far left side), select the project (top item).
Expand the Utilities pane (at window top-right, far right button in the 3-button "View" group).
In the "Project Document" section is the "Organization" text field (File Inspection view, second section from top).
By default, Xcode inserts a company name something similar to the following in all new source files (.m .h etc):
Copyright (c) 2009 MyCompanyName. All rights reserved.
Changing this reference is as simple as entering the following from within a terminal window, replacing “YourNameHere” with the text you prefer. Also, make sure this is all entered on one line in the terminal.
defaults write com.apple.Xcode PBXCustomTemplateMacroDefinitions '{ORGANIZATIONNAME="YourNameHere";}'
OR
you could even go to ~/Library/Preferences and double-click com.apple.Xcode.plist and use the handy-dandy plist editor to set this and a whole bunch of other interesting defaults not covered by the Xcode or IB preference panels.
OR
@slf answer on this question shows an improved way to achieve this in Xcode 4 (Pasted below)
in the navigation pane (far left side), select the project (top item).
Expand the Utilities pane (at window top-right, far right button in the 3-button "View" group).
In the "Project Document" section is the "Organization" text field (File Inspection view, second section from top).